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.
Connector Connected
With combination switch wiring harness connected, backprobe connector at specified terminals. See Figure. See INSPECTING HEADLIGHT DIMMER SWITCH CIRCUIT (CONNECTOR CONNECTED) table. If test results are not as specified, inspect and repair related circuit wiring. See WIRING DIAGRAMS .
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 7 - Ground | Headlight Dimmer Switch FLASH, Light Control Switch HEAD & Dimmer Switch HIGH | No Voltage |
| 7 - Ground | Light Control Switch HEAD & Dimmer Switch LOW | B+ Voltage |
| 17 - Ground | Light Control Switch HEAD & Dimmer Switch LOW & Fog Light Switch ON | No Voltage |
| 17 - Ground | Light Control Switch HEAD & Dimmer Switch HIGH Or FLASH & Fog Light Switch ON | B+ Voltage |
NO RELATED
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.