Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Control Switch
- Disconnect six-way connector at amplifier assembly. Connect voltmeter between Lt. Blue-Black lead and ground. Depress "ON" button and check for battery voltage with ignition switch on. Turn ignition off.
- Connect ohmmeter between Lt. Blue-Black lead and ground. Rotate steering wheel and make the following tests:
Depress "OFF" button and check for a reading between zero and one ohm.
Depress "SET" button and check for a reading of 646 to 714 ohms.
Depress "COAST" button and check for a reading of 114 to 126 ohms.
If resistance values are okay but meter needle fluctuates, remove steering wheel and clean contact surfaces of speed control ground brush and turn signal brush. If resistance readings are high, check switch assemblies and ground circuit in steering column.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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