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 MANUALSFORD1988BRONCO 4.9 Y, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTMIRRORS - POWERTESTINGOUTSIDE MIRROR SWITCH
1988 Ford Bronco 4.9 Y, Automatic
Outside Mirror Switch
1988 Ford Bronco 4.9 Y, AutomaticSECTION Outside Mirror Switch
- Check 15 amp courtesy lamp fuse, replace if blown. Using putty knife or similar tool pry mirror switch out of housing.
- Remove connector at switch and check for voltage across circuits 54 LG/Y and 57 BK. If no voltage, check 54 LG/Y to a good ground. If still no voltage, trace problem in 54 LG/Y wire.
- If voltage is present in above tests, check switch by jumping across the appropriate terminals using the logic chart. See Fig 1 .
- If mirrors operate using the chart, replace the switch. If mirrors do not operate, problem is in mirror or wiring harness to mirror.
RENDER: 1.0x
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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.