Question about 1986 Ford F150 SuperCab

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F150 Brake Lights

My brake lights do not work. I was told that the brake lights work off my turn signal bulbs, which are working. I also was told that if my flashers were not working (which their not) that I had a switch problem. I replaced the switch on the brake petal and they still do not work. Am I overlooking a fuse somewhere or what should I check next.

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  • jmonroe5 Feb 04, 2009

    I checked to see if I had a power problem by putting a paper clip across the electrical wires {one green & one green red wire) across the connector without disconnecting it from the brake switch. My brake lights did not come on. I checked my turn signals and they are not now working (were before).

  • Chuck Martin
    Chuck Martin May 11, 2010

    Do you have power to the switch?

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Recommend you get a cheap 12v test light for about $5 from O'Reilly or NAPA. It will come in handy. Then I would first check for power to and thru the brake lamp switch. If you don't have power at the switch then check fuses with your test light. If all the fuses are good then check the harness close to the switch,these old units are bad about wires braking near the switch.If you find that then you can get a repair connector/harness at any brand name parts store. I don't have a wiring schematic for a 86 model to tell you which fuse actually feeds the brakes so I can only say check all of them.Good thing is on this model it doesn't have that many to check.

Posted on Feb 05, 2009

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