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Re: brake lights inop,fuses constantly blows
Stop lights are genrally routed through rhe tur signal control, which is the most likely place to have a problem. If the signal control feels unusual. there's that maybe provided you've gone the gambit of checking bulbs, pedal switch, etc. get an automatic fuse from the psrts store and put it in the bad fuse spot. It will go on and off like a flasher untul you locate the short. Get one that is lower than the one that blows to get it flashing faster. Do your turn signals and 4 ways workand see whar the do when you appliy the brake whilr on. Good luck
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Fuses blow because there is an overload on the system. If the fuse blows when you step on the brakes then there may be a short in the wiring from the brake light switch to the lights, abs module or turn signal switch. If the fuse blows when you turn the key on then there is likely a short in the wiring to the brake light switch. Basically you will need a wiring schematic to check the wires at the switch and at each of the loads. Also verify that the fuse is supposed to be a 10 amp fuse. Hope this helps
Open the fuse panel by pulling down on the fuse panel cover in the driver's side footwell.
Locate the fuse for the ABS sensor using the fuse diagram on the underside of the fuse panel cover.
Pull the fuse for the ABS using the fuse pullers in the fuse box.
Check the fuse for the ABS. If the fuse is broken or damaged in some way, then replace it with a new fuse of the same amperage. The ABS light could come on if there is a short in the system and it blows the fuse.
Turn the ignition to the "On" position but do not crank the engine. If the ABS light comes on, crank the engine. If it stays on for more than five seconds, there is a failure in the ABS system, and it needs to be serviced by a professional mechanic. GM Tech2 GM Diagnostic Scanner with 32MB Card and TIS2000
My information shows, the 4th. fuse is 8A for Turn signals, Tail lights, Heated mirrors:
The 5th. is 16A for Brake lights, Shiftlock, ABS.
You should check carefully to see which fuse is blowing and what circuits it controls.
You are then able to trace those circuits to locate the short.
Fuse 12 (10 Amps) may be burned out. Its located in "Junction Block". Losing fuse 12 would kill the ABS systems and light the ABS dashboard light.
Fuse 11 (20 Amps) may be out. Its located in "Power Distribution Center". Losing fuse 11 would kill the brake lights, and light the ABS dashboard light. If fuse 11 is blown, check your (3) brake light sockets for shorts of any type, or fuse 11 will just blow again.
I had this same problem a few years ago. Got to the point that the dealer just gave me a box of fuses to replace when it blew. They could not find the source nor could they replicate the situation in house. The 99 Windstar had a recall somewhere in the breaking system-- and leaks could cause a short in the electrical system. Once that repair was made, I never had the problem again. I like to think my constant complaining (car was still under warranty at the time) allowed corporate to make the connection. Look for the recall code.
The problem is simple and you could possibly repair it yourself. the sensor on the brake master cylinder (front side protruding down from the bottom) is shorted out. This sensor turns off the cruise control when the brakes are pushed. You only have to unscrew the old sensor and replace it with the new one. You will notice that the old sensor has has brake fluid all through out it. this is the reason for the short. BTW you will lose a little brake fluid in the process so have the new sensor ready when you take off the old sensor. I know this doesnt sound like it could possibly be the reason but it is. hope it helps