Question about 1994 GMC Sierra

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Brack lights don't work. all others work,turn lights back up. I have yellow wire hanging down labled brack switch unconnected?

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Check your brake switch under your steering colum, attatched to the brake, kinda hard to see.

Posted on Mar 19, 2011

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The center switch to lock back windows land rover discovery 1998 lse wires unconnected help


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I need a wiring diagram for a 98 chevy suburban. My brake lights don't work. Checked fuse bulbs and brack light switch.


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I have a 96 ford explorer xlt with a hidden hitch. the 7 pin rv connector is not working. i found where the wires from vehicle connect to 7 pin connector and one wire was caroded at the crimp black wire...


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I have 1999 Blazer with brake light out on driver side only. All other lights work. Replaced bulbs but nothing changed. Swapped the working lights from the other (right side) with the driver side but...


THE BRAKE LIGHTS DO GO THROUGH THE TURN SIGNAL SWITCH. TO TEST, REMOVE THE PLASTIC COVER AROUND THE THE COLUMN, UNDER THE STEERING WHEEL. THE TURN SIGNAL SWITCH MUST BE IN THE OFF POSITION. YOU WILL NEED TO EXPOSE THE WIRES UNDER THE STEERING WHEEL. DO NOT DISTURB THE WIRES IN THE YELLOW JACKET. THEY ARE AIRBAG WIRES. YELLOW PLUGS YELLOW JACKETED WIRES ARE AIRBAG.THE WIRE IN QUESTION HERE IS YELLOW BUT IT IS NOT IN A YELLOW JACKET, [ SLEEVE ]. NOW, PUSH ON THE BRAKE PEDAL. THE YELLOW WIRE IS LEFT REAR TURN & BRAKE WIRE, DARK GREEN IS RIGHT REAR TURN & BRAKE WIRE. BRAKE PEDAL DEPRESSED, IF BOTH OF THOSE WIRES HAVE POWER, ALL OF THAT IS OK. IF THE YELLOW WIRE HAS NO POWER TURN SIGNAL SWITCH IS BAD

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Brake lights not working


Not even the third eye? then the fuse is blown or all the bulbs are out or the brake light switch on the break pedal is bad wire off or broken( it breaks right off the plug then crosses then blows the fuse as the loose broken wire hits the brake pedel arm. Test the break pedal switch first if the third eye doesesnt work either. no power with a test light the fuse is blown or the wire broke ( the wire goes straight to the switch from the fuse and doesnt go anywhere elese. the other wire if hot should light the lights. Most of these wont come out of park without this working as the wire also turns on the park release but some Fords the park release sticks released and Ford made em that way as they didnt like the brake to get out of park law. If the brake lights dont work maybe you ought not be able to get out of park anyway till its fixed. the switch is hot on both wires with the switch pused down and the lights dont still work go after the third eye first if the bulbs are bad change em before you do the rest of the work. on cars with yellow turn signals the brake lights all work on the same wire but red only use three wires, but you didnt say the turn signales didnt work if they work and they are red you r on the way to the turn signal switch as the brake switch powers the turn switch with power then it splites it fot the two lights and adifferent switch circuit for the front hooks them all together for hazard. yellow turns in the back or even separt bulbs can mean blown bulbs ther too its old enought for all the bulbs to fail and the runs still work.

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