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.
1987 Chevrolet Spectrum ExpressFACTORY OEM SERVICE PROCEDURE
Headlight Switch
- To check headlight switch, remove switch from dash panel. Using an ohmmeter, measure continuity between terminals as follows:
- With headlight switch off, there should be no continuity between terminals. When switch is in parking light position, continuity should exist between Green/Red and Green/White wire terminals.
- When switch is in headlight position, continuity should exist between Green/Red and Green/White wire terminals, Red/Blue and Red/Black wire terminals and between Red and Black wire terminals.
Factory Service Tools
Use the Manual With the Right Hardware
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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.