Why do I have no wipers, turn signals, radio, or dome light

Asked by Nov 06, 2016 at 06:02 PM about the 1990 Ford F-150 XLT Lariat Extended Cab SB

Question type: Maintenance & Repair

1st I noticed no turn signals then my radio started
crackling then no wipers and now no dome light.
Fuses are all good.

1 Answer


You'll need a wiring diagram. Use a multi meter and check for voltage at the fuse box. If power there, check for voltage at the switch for one of the devices not working. If there is no voltage you will have to begin checking backward to a known good source. A color coded wiring diagram will save you a lot of time.

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