Question about 1986 Ford F150 SuperCab
I have replaced the bulbs, flashers, and all the fuses are good and I still don't have working turn signals.
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Posted on Jan 02, 2017
SOURCE: No brakelights or taillights
Yop may have a very common problem unique to that year car.
I have two definite fixes for you:
Open the trunk. Look at the wiring harness that is hooked onto the driver side arm that holds the trunk lid to the body. Untape the wiring harness from the edge of the trunk lid back towards the driver rear seat. You are most likely going to find a broken wire or two, prob a green with a red tracer. The repeated action of lifting/closing the trunklid seems to break the brake/tail power wires. If the wiring harness is perfect, no breaks, AND you have a rear spoiler, remove the trunk interior trim that faces the driver side 1/4 panel. Hidden behind a brace will be a small box. This is the brake lamp sensor. If it has failed, you may need to replace this box. Either fix should resolve your issue.
Posted on Oct 02, 2008
Look in the fuse panel and the turn signal flasher is the big round most likely yellow or silver in the corner of fuse panel. The emergency flasher is in the back side of fuse panel right directly behind the turn signal flasher.
Remove the emergency flasher and install it in place of the turn signal flasher and see if this corrects the problem and if so get a new flasher. If this does not correct it problem will most likely be the multi-function switch.
Posted on Mar 13, 2009
If you haven't done so already, change both flashers that are mounted in the fuse box, the one for turn signals and the one for the 4 ways.
You might have a bad turn signal switch.
Posted on Mar 13, 2009
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