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 MANUALSMERCURY1971COMET 3.3L ENG VIN T, NOT AVAILABLE TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEWINDOWSELECTRIC WINDOW CONTROLSTESTINGWINDOW SWITCHNOTES

1971 Mercury Comet 3.3L Eng VIN T, Not Available Trans

Window Switch: Notes

1971 Mercury Comet 3.3L Eng VIN T, Not Available TransSECTION Notes

With switch removed from vehicle, use a self-powered test light or ohmmeter to perform the following tests. See illustration for pin numbers.

Clip one test lead probe on switch pin No. 3 which is grounded. With all switches in neutral position, pins No. 4 through 11 should have continuity to pin No. 3.
Push any one or all four of the switches forward. All odd numbered pins of the switches pushed forward should lose continuity to pin No. 3.
Push any one or all four switches rearward and all even numbered pins (4 through 10) of the switches pushed rearward should lose continuity to pin No. 3.
Remove test lead clip from pin No. 3 and connect it to pin No. 2. With all switches in neutral position, only pin No. 1 should have continuity to pin No. 2.
Push any one or all four switches forward and hold in that position. All odd numbered pins of switches pushed forward should have continuity to pin No. 2.
Pull any one or all switches rearward and hold in that position. All even numbered pins of the switches pulled rearward should have a continuity to pin No. 2.
If any one switch does not test as above, replace switch.

Fig 1: Window Switch Pin Connections & Numbers

Courtesy of FORD MOTOR CO.

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:

• 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.