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.
1989 Pontiac SafariFACTORY OEM SERVICE PROCEDURE
Control Test: Skylark
- Disconnect wiper switch assembly connector. Turn ignition switch to "RUN" position. Connect voltmeter between Orange/Black wire and ground. Voltmeter should read battery voltage. If not, check Orange/Black wire for open circuit.
- Connect voltmeter between White wire and ground. Voltmeter should read battery voltage. If not, check White wire for open circuit.
- Connect voltmeter between White and Black wires. Voltmeter should read battery voltage. If not, check White and Black wires for open circuit.
- If all voltages are correct from the above tests, replace wiper switch assembly.
Factory Service Tools
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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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