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Re: Trying to remove the wire harness from the brake...
Sometimes they use red locking keys or gray locking keys in the wire harness to keep them from accidently coming apart. Check for any of those. Other than that you may need a small screwdriver and GENTLY pry the clips holding the harness together apart. Thanks for Using Fixya!
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Disconnect the wire harness at the connector from the stoplight switch.
NOTE: Locking tab on connector must be lifted before connector can be removed.
Remove the hairpin retainer and slide the stoplight switch, the push rod and the nylon washers and bushing away from the brake pedal. Remove the stoplight switch by sliding the stoplight switch up/down as required to remove.
NOTE: Since the stoplight switch side plate nearest the brake pedal is slotted, it is not necessary to remove the brake master cylinder push rod and one spacer washer from the brake pedal pin.
Position stoplight switch so that the U-shaped side is nearest the brake pedal and directly over or under the pin. Then slide stoplight switch down or up trapping the master cylinder push rod and black bushing between the stoplight switch side plates. Push stoplight switch and push rod assembly firmly toward brake pedal arm. Assemble outside white plastic washer to pin and install hairpin retainer to trap whole assembly.
CAUTION: Do not substitute other types of pin retainers. Replace only with a production hairpin retainer. Component damage may occur.
Assemble the wire harness connector to the stoplight switch.
NOTE: Stoplight switch wire harness must have sufficient length to travel with stoplight switch during full stroke of brake pedal. If wire length is insufficient, reroute harness or service as required.
Hi, Hmmm... sounds like a power( live line ) melted the insulation and fused together w/ the brake line, thus it powers up your brake light.
Check your rear brake wire harness leading to the front connection main harness., if the harness are covered w/ plastic insulation, cut the insulation and look for a wire that melted and fused together. If you found the wire, seperate it and put some insulator tape to prevent power line shorting. The power line usually colored RED. Hope that helps!
The most common one seems to be a chaffed wiring harness that will
ground out. I've got one in the shop right now that I'm looking to buy
if they can get it solved. I'm trying to lead them to testing the
harness to see if its grounding or not. I can add a bunch of bookmarks
about it when I get back to work.
Ask your dealer about some TSB with this problem. Send us additional details.
Hi .. First I would remove the lamps, and try the brakes, then try again with the wiring harness disconnected from the housing, to see if you can isolate the problem to the lamps, the housing, or the wiring. If it is the wiring , then you will have to trace the harness back toward the front of the car looking for any place where the insulation on the wire has been damaged .
1. Disconnect negative battery cable
2. Use a snap ring pliers to remove retainer from brake pedal pin.
3. Remove the switch by unsnapping it from the pushrod, and disconnect wiring harness from switch.
Lets keep it simple if the wiring harness is in good condition lets not look at that... first check your fuse if the fuse is good... check for power... if you have power coming and going from the fuse then check your brake switch ( located under the dash) attached to brake pedal. Please make sure your light bulbs are both good also. If your brake light switch is good and you have tried everything else it is either going to be in your 4 way switch or wiring harness
if you dont have the signal either, chances are it is the entire lighting harness if its not the fuses. what i did was I have the tow package on mine, I wired the tow wires to the brake wire and it works because the brake and signal are the same.
Hope this helped. but it is only a short term solution. youll need to replace the entire lighting harness, I myself have been trying to find one through a junkyard but to no avail so far. seems to be a common problem with these vehicles.
This should help you.
AT MODULE ON FIREWALL-PIN#48
IGNITION SWITCH HARNESS
IGNITION SWITCH HARNESS
AT SWITCH ABOVE BRAKE PEDAL
IN HARNESS TO TRANSMISSION
Rear Window Defrost
AT DEFROST SWITCH