Why is my Alltrax Controller not powering up?

I’ve got an Alltrax XCT48500 controller installed in my golf cart, and it’s showing absolutely no signs of life. No lights, no response, nothing. I’m stumped and could really use some advice. Has anyone else run into this problem? What did you do to fix it?


The wiring of the Run/Tow switch to the solenoid might need tightening or repairing.

Solutions that Worked for Users

SolutionUsers Who Found SuccessApprox. Cost (USD)Approx. Time Needed (Minutes)
Correct Wiring of Run/Tow Switch2$0 – $1015 – 30
Checking Controller Voltage Pins1$0 (if DIY)30 – 45
Identifying and Replacing a Faulty Run/Tow Switch1$20 – $4030 – 60


  • Complete lack of power or response in the golf cart after installing an Alltrax controller.
  • The controller shows no indicator lights and the solenoid doesn’t click.
  • Key switch activation has no effect.

Possible Causes

  • Miswiring, particularly around the Run/Tow switch.
  • Faulty or improperly connected components like the Run/Tow switch.
  • Voltage discrepancies at the controller’s pins.

Solutions that Worked

1. Correct Wiring of Run/Tow Switch

What I Did: Checked and corrected the wiring of the Run/Tow switch to the solenoid. Outcome: The controller powered up, and the cart was operational. Personal Experience: It was a huge relief when adjusting the wiring brought my cart back to life. Detailed Steps:

  1. Locate the Run/Tow Switch: Find the switch, usually located under the seat or in a similar accessible area.
  2. Identify the Red Wire: This wire should be connected to the battery side of the solenoid.
  3. Check and Correct Wiring: If the red wire is incorrectly connected, rewire it to the correct terminal.
  4. Safety Check: Ensure all connections are secure and there are no loose wires.
  5. Test the Cart: Turn on the cart to check if the issue is resolved. Handy Tips:
    • Label wires during disassembly for easier reassembly.
    • Use a multimeter to check for continuity and ensure proper connections.
    • Regularly inspect wiring for signs of wear or damage.

2. Checking Controller Voltage Pins

What I Did: Used a multimeter to check for voltage at specific controller pins. Outcome: Found and fixed voltage issues, restoring the cart’s functionality. Personal Experience: Methodically checking each pin helped isolate the problem. Detailed Steps:

  1. Secure the Cart: Lift the rear wheels and place the cart on jackstands.
  2. Locate the Controller Pins: Refer to the controller’s manual for pin locations.
  3. Use a Multimeter: Check for the correct voltage at each pin.
  4. Trace Voltage Sources: If any voltage is missing, trace the wires back to their source.
  5. Rectify Issues: Repair or replace any faulty wires or connections. Handy Tips:
    • Take photos before disconnecting wires for reference.
    • Ensure the cart is off and keys are removed before starting.
    • Wear safety gloves to protect against electric shocks.

3. Identifying and Replacing a Faulty Run/Tow Switch

What I Did: Diagnosed the Run/Tow switch and replaced it. Outcome: The cart started working normally after the switch replacement. Personal Experience: Identifying the faulty switch was challenging but rewarding. Detailed Steps:

  1. Diagnose the Switch: Test the switch with a multimeter for continuity.
  2. Remove the Faulty Switch: Carefully disconnect and remove the switch.
  3. Install the New Switch: Place the new switch and connect it properly.
  4. Test the Cart: Check if the new switch has resolved the issue. Handy Tips:
    • Keep spare switches handy for quick replacements.
    • Clean the area around the switch before installation.
    • Check the switch operation manually before powering the cart.

Golf Cart Models Where This Worked

  • 1998 DCS 36 Volt Cart
  • 2015 Club Car Precedent


Ernie loves documenting interesting facts about golf.

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