no lights when u brake

Brian Fix-Erhardt

Asked by Feb 18, 2016 at 11:09 AM about the 1993 Ford F-150 XL Extended Cab LB

Question type: Maintenance & Repair

the back lights come on when the lights are on but when u brake thay don't work

11 Answers


check the fuse, replace the switch~

Brian Fix-Erhardt

what one


It may be the brake light switch on the brake pedal, but make sure the brake light is not burnt out.

Brian Fix-Erhardt

it lights up when the head lights are on


What lights up, gotta be specific I'm not there. The tail lights would light up with the head lights on, you said you have a brake light issue.

Brian Fix-Erhardt

yeah ... sorry that is what I mean


The brake light and tail light is in the same bulb. You may have another set of tail light bulbs above the brake light/tail light, that is only a 1 filament bulb. The brake light/ tail light has 2 filaments in the bulb. Let me ask you this, do the blinkers work in the rear of the truck?

Brian Fix-Erhardt

yes thay do


Ok that narrows it down. Either the brake light relay, brake light switch, or a fuse. Probably the switch or relay.

1 out of 1 people think this is helpful.
Best Answer

--or a connection of thin the outside of the socket~ yes...your old friend "the Grounding issue"....what one must do is get your multimeter and test for proper ground at the socket~ you'd be surprised at how little the ground actually gets back there~

Andrew Olsen

If there is ground for the blinker there will be ground for the brake light. Brake fuse or brake switch

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