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.
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HOMESERVICE MANUALSFORD1991THUNDERBIRD LX, 5.0 TREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEPOWER WINDOWSTESTINGWINDOW SWITCHESSINGLE SWITCH (COUGAR & THUNDERBIRD)
1991 Ford Thunderbird LX, 5.0 T
Single Switch (Cougar & Thunderbird)
1991 Ford Thunderbird LX, 5.0 TSECTION Single Switch (Cougar & Thunderbird)
- Remove switch from vehicle. Test with a self-powered test light or ohmmeter. With switch in NEUTRAL position, there should be continuity between terminals No. 1 and 2 and terminals No. 3 and 4. Terminal No. 5 should show no continuity to any other terminal.
- When the ribbed portion of switch knobs is pushed (closed position), there should be continuity between terminals No. 1 and 5 and terminals No. 3 and 4. Terminal No. 2 should show no continuity to any other terminal.
- When flat portion of switch knobs is pushed (open position), there should be continuity between terminals No. 1 and 2 and terminals No. 4 and 5. Terminal No. 2 should show no continuity to any other terminal. See Fig 1 . If switch does not test as described, replace switch.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.