Harley Davidson Golf Cart Wiring Diagrams 1967-1978 DE


There are five solenoids on the 67-78 instead of the six used in the previous years. The battery arrangement changed as well from the 4 + 2 to the 3 + 3 configuration.

Diagrams

Solenoid Arrangement

Solenoid Arrangement For Harley Davidson Golf Cart DE 1967-71

1967-70 Model DE Control Circuit Wiring Diagram for 16 Gauge Wire

1967-70 Model DE Heavy Cable Diagram

Numbering Key for 1967 -1970 Diagrams

  1. Key Switch – 3 wires (Green, Blue, Yellow) For terminals 2, 3, and  4
  2. Key Switch Terminal – Green wire to Speed Switch Connection 11
  3. Key Switch Terminal – Blue wire to Speed Switch Connection 12
  4. Key Switch Terminal – Yellow wire to Speed Switch Connection 13
  5. Speed Switch (Contains Terminals 6, 7, 8, 9, 10, 11,12,13, and 14)
  6. Speed Switch Terminal – White wire to Terminal 15 on Switch Arm (2), Black wire to Solenoid Terminal A1 and Black wire to Circuit Breaker (4 wires)
  7. Speed Switch Terminal – Black wire to Solenoid Terminal A4
  8. Speed Switch Terminal – Red wire to Micro Switch NC Terminal, Red wire to Solenoid  Terminal A2
  9. Speed Switch Terminal – Orange wire to Delay Tube Pin 5
  10. Speed Switch Terminal – Black wire to Solenoid Terminal C2, Black wire to Micro Switch NC Terminal,  Diode to Speed Switch Terminal 9
  11. Speed Switch Terminal – Green wire to Solenoid  Terminal R2, Green wire to Key Switch Terminal 2
  12. Speed Switch Terminal – Blue wire to Solenoid  Terminal F2, Blue wire to Key Switch Terminal 3
  13. Speed Switch Terminal – Yellow wire to Key Switch Terminal 4
  14. Speed Switch Terminal – White wire to Micro Switch Common, Diode to Speed Switch Terminal 13
  15. Speed Switch Arm Terminal – White wire jumper to Speed Switch Terminal 6 (2)
  16. Micro Switch – Yellow wire to Key Switch Terminal 4 and Red wire to Speed Switch Terminal 6
  17. Diode
  18. Charger Connection Plug – Negative Terminal 1 Black wire to Speed Switch Terminal 6 and Positive Terminal 2 Red wire to Motor Terminal A1
  19. Single Action Solenoid A, B, and C
    Solenoid A
    A1 – Black wire to Speed Switch Terminal 6
    A2 – Red wire to Delay Tube Pin 8, Red wire to Speed Switch Terminal 8
    A3 – White wire to Delay Tube Pin 3, White wire to Solenoid Terminal B3
    A4 – Black wire to Outer Diode, Black wire to Speed Switch Terminal 7Solenoid B
    B1 – Copper Strap to Solenoid Terminal F1
    B2 – Black wire to Solenoid Terminal F3
    B3 – White wire to Solenoid Terminal A3, White wire to Solenoid Terminal C3
    B4 – Black Wire to Inner  Diode, Black wire to Front Right Positive Battery TerminalSolenoid C
    C1 – Black wire to Resistor 25, Black wire to Right Rear Battery Negative Terminal, Black  wire to Outer Diode
    C2 – Black wire to Speed Switch Terminal 10
    C3 – White wire to Solenoid Terminal B3, White wire to Outer Diode
    C4 – Black wire to Resistor 26, Black wire to Motor Terminal A1
  20. Dual Action Solenoid
    Solenoid R
    R1 – Black wire to Motor Terminal S1, Copper Strap to R5
    R2 – Green wire to Speed Switch Terminal 11
    R3 – Black  wire to Solenoid Terminal F3
    R4 – Copper Strap to Solenoid Terminal F1
    R5 – Copper Strap to Solenoid  Terminal R1
    R6 – Copper Strap to Solenoid Terminal F5, Black wire  to Motor Terminal A2Solenoid F
    F1 – Copper Strap to Solenoid  Terminal R4
    F2 – Blue wire to Speed Switch Terminal 12
    F3 – Black wire to Solenoid Terminal R3
    F4 – Copper Strap  to Solenoid Terminal F6, Black wire to Motor Terminal S2
  21. Outer Diode
  22. Inner Diode
  23. Motor
    Terminal A1 – Black wire to Solenoid Terminal C4
    Terminal A2 – Black wire to Solenoid Terminal R6
    Terminal S1 – Black wire to Solenoid Terminal R1
    Terminal S2 – Black wire to Solenoid Terminal F4
  24. Front Batteries
  25. Rear Batteries
  26. Resistor
  27. Circuit Breaker
  28. Delay Tube

1967-70 Energized Circuits Diagrams

Charging

  • Key switch –  Off
  • Speed Switch –  at resting stop
  • Solenoid “A” Open – Voltage not applied to small terminals
  • Solenoid “B” Open – Voltage not applied to small terminals
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “D” Open – Voltage not applied to small terminals
  • Solenoid “E” Open – Voltage not applied to small terminals
  • Solenoid “F” Open – Voltage not applied to small terminals
  • Voltage to Motor – None
  • Voltage across A1 and A2 – None
  • Micro Switch – Open

First Speed

  • Key switch –  Forward
  • Speed Switch –  Movement toward Second Speed Contact
  • Solenoid “A” Closed – Voltage applied to small terminals, continuity across large terminals 
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals 
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “D” Open – Voltage not applied to small terminals
  • Solenoid “E” Open – Voltage not applied to small terminals
  • Solenoid “F” Open – Voltage not applied to small terminals
  • Micro Switch – Closed sending voltage to Solenoid “A” and “B” Small Terminals

Second Speed

  • Key switch –  Forward
  • Speed Switch –  On Second Speed Contact sending voltage to Solenoid “E” small terminals
  • Solenoid “A” Closed – Voltage applied to small terminals, continuity across large terminals 
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals 
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “D” Open – Voltage not applied to small terminals
  • Solenoid “E” Voltage applied to small terminals, continuity across large terminals 
  • Solenoid “F” Open – Voltage not applied to small terminals
  • Micro Switch – Closed sending voltage to Solenoid “A” and “B” Small Terminals

Third Speed

  • Key switch –  Forward
  • Speed Switch –  On Third Speed Contact sending voltage to Solenoid “F” small terminals
  • Solenoid “A” Closed – Voltage applied to small terminals, continuity across large terminals 
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals 
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “D” Open – Voltage not applied to small terminals
  • Solenoid “E” Open – Voltage not applied to small terminals
  • Solenoid “F” Voltage applied to small terminals, continuity across large terminals 
  • Micro Switch – Closed sending voltage to Solenoid “A” and “B” Small terminals

Fourth Speed

  • Key switch – Forward
  • Speed Switch – Contact #4 Micro Switch has depressed
  • Solenoid “A” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 36-volts bypassing the Resistor
  • Voltage across A1 and A2 -33.5-volts to 34.5-volts
  • Left Motor Diode – Blocking current flowing from Solenoid “A” to Solenoid “C”
  • Right Motor Diode – Blocking current flowing from Solenoid “B” to Solenoid “A”
  • Speed Switch Diode – Allows current from Speed Switch to third Speed Switch Contact and on to Solenoid “B” and “F”
  • Time Delay – Actuated and powering Solenoid “C”
  • Micro Switch – Activated and powering Solenoid “A” and Time Delay

Reverse (First Speed Only Shown)

  • Key switch –  Reverse
  • Speed Switch –  Same as Forward Speeds
  • Solenoid “A”  –  Same as Forward Speeds
  • Solenoid “B” – Same as Forward Speeds
  • Solenoid “C”  – Same as Forward Speeds
  • Solenoid “F” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Solenoid “R” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom terminals open
  • Voltage to Motor – Same as Forward Speeds
  • Voltage across A1 and A2 -Same as Forward Speeds
  • Left Motor Diode – Same as Forward Speeds
  • Right Motor Diode – Same as Forward Speeds
  • Speed Switch Diode – Same as Forward Speeds
  • Time Delay – Actuated and powering Solenoid “C” 
  • Micro Switch – Same as Forward Speeds
  • If so equipped – Reverse Buzzer actuated through ACC on Key Switch

1967 Through 1970 Models DE and DEC Troubleshooting Chart

SymptomPossible CauseRemedy
Batteries will not chargeAccelerator pedal not at rest position and wiper arm is not completely on the first contact blockRefer to Speed Switch Adjustment Section here
Corroded or loose battery connectionsCheck, clean and tighten connections
Faulty BatteryTest each Battery while completely disconnected from the series
Faulty ChargerUse multimeter and test output voltage
Will not go in forward or reverseFaulty batteries or connectionsInspect batteries and clean connections
Faulty key switchTest key switch with continuity tester
Faulty speed switchCheck speed switch connections
Solenoid "B" not energizingCheck cabling to Solenoid "B"
Test solenoid with procedure listed here
Faulty MotorFollow Motor trouble shooting procedures
Forward Works, no reverseFaulty key switchTest key switch with continuity tester
Solenoid "R" not energizingCheck cabling to Solenoid "R"
Test solenoid with procedure listed here
Solenoid "F" open between Large bottom terminalsCheck connections to Solenoid "B" large terminals.
Test solenoid with procedure listed here
Reverse works OK, no ForwardFaulty key switchTest key switch with continuity tester
Solenoid "R" open circuit on large bottom terminalsCheck connections to Solenoid "R" large terminals.
Test solenoid with procedure listed here
Solenoid "F" not EnergizingCheck connections to Solenoid "F" control terminals.
Test solenoid with procedure listed here
Speed 1 Works, no 2, 3, or 4Speed Switch wiper arm not making contact with 4th speed contact pad.Remove and inspect Speed Switch.
Speed Switch diode openCheck diode leads.
Speed 1 and 2 Works, no 3, or 4Micro switch not making the connection between NC and COMTest Micro Switch
Solenoid "A" not energizing, stuck openCheck connections to Solenoid "A" terminals.
Test solenoid with procedure listed here
Speed 3 and 4 Works, no 1 or 2Both Motor diodes openCheck diode condition
Solenoid "A" stuck closedCheck connections to Solenoid "A" control terminals.
Test solenoid with procedure listed here
Speed 3 and 4 works, no 1, or 2Short in Speed Switch DiodeInspect, repair, or replace.
Speed 2 and 4 works, no 1 or 3Solenoid "C" stuck closed bypassing ResistorTest solenoid "C" with procedure listed here
Open ResistorCheck Resistor connections.
Speed 1 and 3 works, no 2 or 4Solenoid "C" not energizing or stuck open passing all current through ResistorTest solenoid "C" with procedure listed here
Speed 1 and 4 works, no 2 or 3Time Delay Tube shortedCheck Time Delay Tube connections.
Speed 1, 2, and 3 works, no 4Time Delay Tube open or faultyCheck Time Delay Tube connections.
Speed 3 has a long delay or too short of a delayTime Delay Tube open faultyTest Time Delay Tube.
Front set of batteries goes dead or
Rear set of batteries goes dead
One Motor Diode is openCheck connections to Motor Diode or replace.

Wiring Diagrams For 1971 DE

1971 Model DE Control Circuit Wiring Diagram for 16 Gauge Wire

1971 Model DE Heavy Cable Diagram

Charging

  • Key switch –  Off
  • Speed Switch –  at resting stop
  • Solenoid “A” Open – Voltage not applied to small terminals
  • Solenoid “B” Open – Voltage not applied to small terminals
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “F” Open – Voltage not applied to small terminals – Bottom  terminals closed
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – None
  • Voltage across A1 and A2 – None
  • Motor Diodes – None
  • Speed Switch Diode – None
  • Time Delay – Open
  • Micro Switch – NO Open NC Closed

First Speed

  • Key switch –  Forward
  • Speed Switch –  Contact #3
  • Solenoid “A” Open – Voltage not applied to small terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom  terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 18-volts through the Resistor
  • Voltage across A1 and A2 – 12-volts
  • Left Motor Diode – Current flowing from Solenoid “A” to Solenoid “B”
  • Right Motor Diode – Current flowing from Solenoid “C” to Solenoid “A”
  • Speed Switch Diode – Blocks current from Speed Switch  fourth Contact
  • Time Delay – Open
  • Micro Switch – Open

Second Speed

  • Key switch –  Forward
  • Speed Switch –  Contact #4 Micro Switch not depressed yet
  • Solenoid “A” Open – Voltage not applied to small terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom  terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 18-volts bypassing the Resistor
  • Voltage across A1 and A2 – 15.5-volts to 16.5-volts
  • Left Motor Diode – Current flowing from Solenoid “A” to Solenoid “B”
  • Right Motor Diode – Current flowing from Solenoid “C” to Solenoid “A”
  • Speed Switch Diode – Allows current from Speed Switch to third Speed Switch Contact and on to Solenoid  “B” and “F”
  • Time Delay – Open
  • Micro Switch – not activated but allowing current to pass to power Solenoid “C”

Third Speed

  • Key switch –  Forward
  • Speed Switch –  Contact #4 Micro Switch has depressed
  • Solenoid “A”  Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom  terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 36-volts through the Resistor
  • Voltage across A1 and A2 -30.5-volts to 31.5-volts
  • Left Motor Diode – Blocking current flowing from Solenoid “A” to Solenoid “C”
  • Right Motor Diode – Blocking current flowing from Solenoid “B” to Solenoid “A”
  • Speed Switch Diode – Allows current from Speed Switch to third Speed Switch Contact and on to Solenoid  “B” and “F”
  • Time Delay – Actuated and powering Solenoid “C” after 1.8 seconds
  • Micro Switch – Activated and powering Solenoid “A” and Time Delay

Fourth Speed

  • Key switch –  Forward
  • Speed Switch –  Contact #4 Micro Switch has depressed
  • Solenoid “A”  Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom  terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 36-volts bypassing the Resistor
  • Voltage across A1 and A2 -33.5-volts to 34.5-volts
  • Left Motor Diode – Blocking current flowing from Solenoid “A” to Solenoid “C”
  • Right Motor Diode – Blocking current flowing from Solenoid “B” to Solenoid “A”
  • Speed Switch Diode – Allows current from Speed Switch to third Speed Switch Contact and on to Solenoid  “B” and “F”
  • Time Delay – Actuated and powering Solenoid “C” 
  • Micro Switch – Activated and powering Solenoid “A” and Time Delay

Reverse (First Speed Only Shown)

  • Key switch –  Reverse
  • Speed Switch –  Same as Forward Speeds
  • Solenoid “A”  –  Same as Forward Speeds
  • Solenoid “B” – Same as Forward Speeds
  • Solenoid “C”  – Same as Forward Speeds
  • Solenoid “F” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Solenoid “R” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom terminals open
  • Voltage to Motor – Same as Forward Speeds
  • Voltage across A1 and A2 -Same as Forward Speeds
  • Left Motor Diode – Same as Forward Speeds
  • Right Motor Diode – Same as Forward Speeds
  • Speed Switch Diode – Same as Forward Speeds
  • Time Delay – Actuated and powering Solenoid “C” 
  • Micro Switch – Same as Forward Speeds
  • If so equipped – Reverse Buzzer actuated through ACC on Key Switch

Numbering Key For 1971 Diagrams

  1. Key Switch – 3 wires (Green, Blue, Yellow) For terminals 2, 3, and  4
  2. Key Switch Terminal – Green wire to Speed Switch Connection 11
  3. Key Switch Terminal – Blue wire to Speed Switch Connection 12
  4. Key Switch Terminal – Yellow wire to Speed Switch Connection 13
  5. Speed Switch (Contains Terminals 6, 7, 8, 9, 10, 11,12,13, and 14)
  6. Speed Switch Terminal – White wire to Terminal 15 on Switch Arm (2), Black wire to Solenoid Terminal A1 and Black wire to Circuit Breaker (4 wires)
  7. Speed Switch Terminal – Black wire to Solenoid Terminal A4
  8. Speed Switch Terminal – Red wire to Micro Switch NC Terminal, Red wire to Solenoid  Terminal A2
  9. Speed Switch Terminal – Orange wire to Delay Tube Pin 5
  10. Speed Switch Terminal – Black wire to Solenoid Terminal C2, Black wire to Micro Switch NC Terminal,  Diode to Speed Switch Terminal 9
  11. Speed Switch Terminal – Green wire to Solenoid  Terminal R2, Green wire to Key Switch Terminal 2
  12. Speed Switch Terminal – Blue wire to Solenoid  Terminal F2, Blue wire to Key Switch Terminal 3
  13. Speed Switch Terminal – Yellow wire to Key Switch Terminal 4
  14. Speed Switch Terminal – White wire to Micro Switch Common, Diode to Speed Switch Terminal 13
  15. Speed Switch Arm Terminal – White wire jumper to Speed Switch Terminal 6 (2)
  16. Micro Switch – Yellow wire to Key Switch Terminal 4 and Red wire to Speed Switch Terminal 6
  17. Diode
  18. Charger Connection Plug – Negative Terminal 1 Black wire to Speed Switch Terminal 6 and Positive Terminal 2 Red wire to Motor Terminal A1
  19. Single Action Solenoid A,B, and C
    Solenoid A
    A1 – Black wire to Speed Switch Terminal 6
    A2 – Red wire to Delay Tube Pin 8, Red wire to Speed Switch Terminal 8
    A3 – White wire to0 Delay Tube Pin 3, White wire to Solenoid Terminal B3
    A4 – Black wire to Outer Diode, Black wire to Speed Switch Terminal 7Solenoid B
    B1 – Copper Strap to Solenoid Terminal F1
    B2 – Black wire to Solenoid Terminal F3
    B3 – White wire to Solenoid Terminal A3, White wire to Solenoid Terminal C3
    B4 – Black Wire to Inner  Diode, Black wire to Front Right Positive Battery TerminalSolenoid C
    C1 – Black wire to Resistor 25, Black wire to Right Rear Battery Negative Terminal, Black  wire to Outer Diode
    C2 – Black wire to Speed Switch Terminal 10
    C3 – White wire to Solenoid Terminal B3, White wire to Outer Diode
    C4 – Black wire to Resistor 26, Black wire to Motor Terminal A1
  20. Dual Action Solenoid
    Solenoid R
    R1 – Black wire to Motor Terminal S1, Copper Strap to R5
    R2 – Green wire to Speed Switch Terminal 11
    R3 – Black  wire to Solenoid Terminal F3
    R4 – Copper Strap to Solenoid Terminal F1
    R5 – Copper Strap to Solenoid  Terminal R1
    R6 – Copper Strap to Solenoid Terminal F5, Black wire  to Motor Terminal A2Solenoid F
    F1 – Copper Strap to Solenoid  Terminal R4
    F2 – Blue wire to Speed Switch Terminal 12
    F3 – Black wire to Solenoid Terminal R3
    F4 – Copper Strap  to Solenoid Terminal F6, Black wire to Motor Terminal S2
  21. Outer Diode
  22. Inner Diode
  23. Motor
    Terminal A1 – Black wire to Solenoid Terminal C4
    Terminal A2 – Black wire to Solenoid Terminal R6
    Terminal S1 – Black wire to Solenoid Terminal R1
    Terminal S2 – Black wire to Solenoid Terminal F4
  24. Front Batteries
  25. Rear Batteries
  26. Resistor
  27. Circuit Breaker
  28. Delay Tube

Wiring Diagrams For 1972 to 1975 DE

Overview

The DE3 circuitry uses a battery switching system and resistor to control current flow to the traction motor.

There are two basic circuits involved:

Solenoid 18-volt control circuit-Key Switch, Time Delay Tube, and Solenoids.
Traction Motor 18-36-volt Circuit: Uses Solenoid contacts, Resistor, Diodes, and  Traction Motor.

Solenoid “A” is used in this circuit to switch from 18-volts parallel to 36-volts series. “F” and “R” are used to control forward and reverse, and Solenoid “C” is used to pass through the Resistor, or to bypass it (i.e. first and third speeds). Therefore the resistor/voltage combinations are as follows:

First Speed – 18-volts passing through the Resistor
Second Speed 18-volts bypassing the Resistor
Third Speed 36-volts passing through the Resistor
Fourth Speed 36-volts bypassing the Resistor

Following the wiring diagrams, this is the description of what state each component is in during the different stages between charging and fourth speed:

1972 to 1975 Model DE Control Circuit Wiring Diagram for 16 Gauge Wire

1972 to 1975 Model DE Heavy Cable Diagram

Charging

  • Key switch –  Off
  • Speed Switch –  at resting stop
  • Solenoid “A” Open – Voltage not applied to small terminals
  • Solenoid “B” Open – Voltage not applied to small terminals
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “F” Open – Voltage not applied to small terminals – Bottom  terminals closed
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – None
  • Voltage across A1 and A2 – None
  • Motor Diodes – None
  • Speed Switch Diode – None
  • Time Delay – Open
  • Micro Switch – Open

First Speed

  • Key switch –  Forward
  • Speed Switch –  Contact #3
  • Solenoid “A” Open – Voltage not applied to small terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom  terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 18-volts through the Resistor
  • Voltage across A1 and A2 – 12-volts
  • Left Motor Diode – Current flowing from Solenoid “A” to Solenoid “B”
  • Right Motor Diode – Current flowing from Solenoid “C” to Solenoid “A”
  • Speed Switch Diode – Blocks current from Speed Switch  fourth Contact
  • Time Delay – Open
  • Micro Switch – Open

Second Speed

  • Key switch –  Forward
  • Speed Switch –  Contact #4 Micro Switch not depressed yet
  • Solenoid “A” Open – Voltage not applied to small terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom  terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 18-volts bypassing the Resistor
  • Voltage across A1 and A2 – 15.5-volts to 16.5-volts
  • Left Motor Diode – Current flowing from Solenoid “A” to Solenoid “B”
  • Right Motor Diode – Current flowing from Solenoid “C” to Solenoid “A”
  • Speed Switch Diode – Allows current from Speed Switch to third Speed Switch Contact and on to Solenoid  “B” and “F”
  • Time Delay – Open
  • Micro Switch – not activated but allowing current to pass to power Solenoid “C”

Third Speed

  • Key switch –  Forward
  • Speed Switch –  Contact #4 Micro Switch has depressed
  • Solenoid “A”  Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Open – Voltage not applied to small terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom  terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 36-volts through the Resistor
  • Voltage across A1 and A2 -30.5-volts to 31.5-volts
  • Left Motor Diode – Blocking current flowing from Solenoid “A” to Solenoid “C”
  • Right Motor Diode – Blocking current flowing from Solenoid “B” to Solenoid “A”
  • Speed Switch Diode – Allows current from Speed Switch to third Speed Switch Contact and on to Solenoid  “B” and “F”
  • Time Delay – Actuated and powering Solenoid “C” after 1.8 seconds
  • Micro Switch – Activated and powering Solenoid “A” and Time Delay

Fourth Speed

  • Key switch –  Forward
  • Speed Switch –  Contact #4 Micro Switch has depressed
  • Solenoid “A”  Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “B” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “C” Closed – Voltage applied to small terminals, continuity across large terminals
  • Solenoid “F” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom  terminals open
  • Solenoid “R” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Voltage to Motor – 36-volts bypassing the Resistor
  • Voltage across A1 and A2 -33.5-volts to 34.5-volts
  • Left Motor Diode – Blocking current flowing from Solenoid “A” to Solenoid “C”
  • Right Motor Diode – Blocking current flowing from Solenoid “B” to Solenoid “A”
  • Speed Switch Diode – Allows current from Speed Switch to third Speed Switch Contact and on to Solenoid  “B” and “F”
  • Time Delay – Actuated and powering Solenoid “C” 
  • Micro Switch – Activated and powering Solenoid “A” and Time Delay

Reverse (First Speed Only Shown)

  • Key switch –  Reverse
  • Speed Switch –  Same as Forward Speeds
  • Solenoid “A”  –  Same as Forward Speeds
  • Solenoid “B” – Same as Forward Speeds
  • Solenoid “C”  – Same as Forward Speeds
  • Solenoid “F” Open – Voltage not applied to small terminals – Bottom terminals closed
  • Solenoid “R” Closed – Voltage applied to small terminals, continuity across large terminals – Bottom terminals open
  • Voltage to Motor – Same as Forward Speeds
  • Voltage across A1 and A2 -Same as Forward Speeds
  • Left Motor Diode – Same as Forward Speeds
  • Right Motor Diode – Same as Forward Speeds
  • Speed Switch Diode – Same as Forward Speeds
  • Time Delay – Actuated and powering Solenoid “C” 
  • Micro Switch – Same as Forward Speeds
  • If so equipped – Reverse Buzzer actuated through ACC on Key Switch

Numbering Key for 1972 and Up Diagrams

  1. Key Switch – 3 wires (Green, Blue, Yellow) For terminals 2, 3, and  4
  2. Key Switch Terminal – Green wire to Speed Switch Connection 11
  3. Key Switch Terminal – Blue wire to Speed Switch Connection 12
  4. Key Switch Terminal – Yellow wire to Speed Switch Connection 13
  5. Speed Switch (Contains Terminals 6, 7, 8, 9, 10, 11,12,13, and 14)
  6. Speed Switch Terminal – White wire to Terminal 15 on Switch Arm (2), Black wire to Solenoid Terminal A1 and Black wire to Front Battery Positive Terminal
  7. Not Used
  8. Not Used
  9. Speed Switch Terminal – Orange wire to Delay Tube Pin 5, Diode to Speed Switch Terminal 10
  10. Speed Switch Terminal – Black wire to Solenoid Terminal C3, Black wire to Micro Switch NC Terminal,  Diode to Speed Switch Terminal 9
  11. Not Used
  12. Not Used
  13. Speed Switch Terminal – Brown wire to Solenoid Terminal F3, Diode to Speed Switch Terminal 14
  14. Speed Switch Terminal – White wire to Micro Switch Common, Diode to Speed Switch Terminal 13
  15. Speed Switch Arm Terminal – White wire jumper to Speed Switch Terminal 6 (2)
  16. Micro Switch – White wire from Com to Speed Switch Terminal 14, Red wire from NO to Solenoid  Terminal A2, and Black wire from NC to Speed Switch Terminal 10
  17. Diode (2)
  18. Charger Connection Plug – Negative Terminal 1 Black wire to Right Diode 22 and Positive Terminal 2 Red wire to Solenoid Terminal B1
  19. Single Action Solenoid A,B, and C
    Solenoid A
    A1 – Black wire to Speed Switch Terminal 6, Black wire to Left Diode 21
    A2 – Red wire to Delay Tube Pin 8, Red wire to Speed Switch Terminal 3 and Red wire to Micro Switch NC
    A3 – White wire to Delay Tube Pin 3, White wire to Solenoid Terminal C2
    A4 – Black wire to Rear Battery Negative TerminalSolenoid B
    B1 – Black wire to Rear Battery Positive Termina and Red wire to Charger Connection Plug Terminal 2
    B2 – White wire to Solenoid Terminal C2
    B3 – Yellow wire to Key Switch Terminal 4
    B4 – Copper Strap to Solenoid Terminal R4Solenoid C
    C1 – Black wire to Motor Terminal A1
    C2 – White wire to Solenoid Terminal B2 and White wire to Solenoid Terminal A3
    C3 – Black wire to Speed Switch Terminal 10
    C4 – Copper Strap to Right Diode 22, Black wire to Resistor 26, Black wire to Front Battery Negative Terminal
  20. Dual Action Solenoid
    Solenoid R
    R1 – Copper Strap to R5
    R2 – Green wire to Key Switch Terminal 2
    R3 – Brown wire to Solenoid Terminal F3
    R4 – Copper Strap to Solenoid Terminal B4 and Copper Strap to Solenoid  Terminal F1
    R5 – Copper Strap to Solenoid  Terminal R1, Black wire to Motor Terminal S2
    R6 – Copper Strap to Solenoid Terminal F5, Black wire  to Motor Terminal A2Solenoid F
    F1 – Copper Strap to Solenoid  Terminal R4
    F2 – Blue wire to Key Switch Terminal 3
    F3 – Brown wire to Solenoid Terminal R3 and Brown wire to Speed Switch Terminal 13
    F4 – Copper Strap  to Solenoid Terminal F6, Black wire to Motor Terminal S1
  21. Left Diode
  22. Right Diode
  23. Motor
    Terminal A1 – Black wire to Resistor 26 and Solenoid Terminal C1
    Terminal A2 – Black wire to Solenoid Terminal R6
    Terminal S1 – Black wire to Solenoid Terminal F6
    Terminal S2 – Black wire to Solenoid Terminal R5
  24. Front Batteries
  25. Rear Batteries
  26. Resistor
  27. Not Used
  28. Delay Tube

Wiring Diagrams For 1976 to 1978 DE

The 1976 to 1978 Models are different from the 1975 models in that the front batteries are changed in orientation, as shown below. Wiring is essentially the same until 1979.

Solenoid Array Exploded View

Speed Switch – Exploded View

Troubleshooting Chart for 1971 To 1978 Model DE

SymptomPossible CauseRemedy
Batteries will not chargeAccelerator pedal not at rest position and wiper arm is not completely on the first contact blockRefer to Speed Switch Adjustment Section here
Corroded or loose battery connectionsCheck, clean and tighten connections
Faulty BatteryTest each Battery while completely disconnected from the series
Faulty ChargerUse multimeter and test output voltage
Will not go in forward or reverseFaulty batteries or connectionsInspect batteries and clean connections
Faulty key switchTest key switch with continuity tester
Faulty speed switchCheck speed switch connections
Solenoid "B" not energizingCheck cabling to Solenoid "B"
Test solenoid with procedure listed here
Faulty MotorFollow Motor trouble shooting procedures
Forward Works, no reverseFaulty key switchTest key switch with continuity tester
Solenoid "R" not energizingCheck cabling to Solenoid "R"
Test solenoid with procedure listed here
Solenoid "F" open between Large bottom terminalsCheck connections to Solenoid "B" large terminals.
Test solenoid with procedure listed here
Reverse works OK, no ForwardFaulty key switchTest key switch with continuity tester
Solenoid "R" open circuit on large bottom terminalsCheck connections to Solenoid "R" large terminals.
Test solenoid with procedure listed here
Solenoid "F" not EnergizingCheck connections to Solenoid "F" control terminals.
Test solenoid with procedure listed here
Speed 1 Works, no 2, 3, or 4Speed Switch wiper arm not making contact with 4th speed contact pad.Remove and inspect Speed Switch.
Speed Switch diode openCheck diode leads.
Speed 1 and 2 Works, no 3, or 4Micro switch not making the connection between NC and COMTest Micro Switch
Solenoid "A" not energizing, stuck openCheck connections to Solenoid "A" terminals.
Test solenoid with procedure listed here
Speed 3 and 4 Works, no 1 or 2Both Motor diodes openCheck diode condition
Solenoid "A" stuck closedCheck connections to Solenoid "A" control terminals.
Test solenoid with procedure listed here
Speed 3 and 4 works, no 1, or 2Short in Speed Switch DiodeInspect, repair, or replace.
Speed 2 and 4 works, no 1 or 3Solenoid "C" stuck closed bypassing ResistorTest solenoid "C" with procedure listed here
Open ResistorCheck Resistor connections.
Speed 1 and 3 works, no 2 or 4Solenoid "C" not energizing or stuck open passing all current through ResistorTest solenoid "C" with procedure listed here
Speed 1 and 4 works, no 2 or 3Time Delay Tube shortedCheck Time Delay Tube connections.
Speed 1, 2, and 3 works, no 4Time Delay Tube open or faultyCheck Time Delay Tube connections.
Speed 3 has a long delay or too short of a delayTime Delay Tube open faultyTest Time Delay Tube.
Front set of batteries goes dead or
Rear set of batteries goes dead
One Motor Diode is openCheck connections to Motor Diode or replace.

Conclusion

These charts and illustrations are to be used in aiding the repair and maintenance of your Harley Davidson golf cart. The illustrations and language will be updated and more details become available.

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