I have a 91 s10. my brake lights dont work there isent power to the brake light fuse. everything else works talilights blinkers so forth.

Check brake light fuse first. If ok, the brake light switch at the brake pedal may be defective. Try wiggling the switch to see if the brake lights work. If not, disconnect the wiring connecter and if it is just 2 wires cross them over and see if the brake lights come on. If they do, the brake light switch is bad. If wiggling the switch makes the brake lights work, I would suggest a brake light switch as well

Hi, first, keep in mind a few things. When checking your power, you will want to check it with the light switch on. Next, do your high beems wrk? I would check your switch.

The headlight switch would have nothing to do with brake lights and turn signals. The turn signal switch would.

if your fuse is good. and you have power at the brake light switch and when you hit the brakes you have power coming out the otherside of brake light switch/which would be the white wire/ check that the white wire is sending power up the turn signal switch. if theres power there and your turnsignals work? im afraid that your turnsignal switch is bad rare but it has been known to happen.

Check the brake light fuse. It's separate from the running light fuse and blinker fuse.

behind the radio, take the radio and the cover that goes over it. it should be there next to the hazard ligths flasher.

Do you have power with a test light in and out of the switch? Do the turn signals work? Will the brake lights work if you play with the turn signal handle?

flasher located at bottom of fuse box its round bout the size of a pop bottle lid,hazard flasher located at top

i own a 1991 chevy blazer myself but my problem is opposet of yours my back lights stay on well i went underneath the dash board an i look up underneath my steering column an i saw to components one was to my cruise control an the one in back of it was to my back lights an i moved this around an to my surprise my light swork good now but now my speed odometer doesnt not work an my gas gauge am my oil aa water gauge my power windows dont work an niether my a/c or heater defroster im jus wondering if i need to move this component alittke more to the left or right yesterday everything worked hmmmm