Possible short in the brake switch
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Possible short in the brake switch
Is there a known problem with the brake switches on these cars that might cause a short when the brakes are applied or the turn signals are engaged? When I step on the brakes, not only does my voltage often drop dangerously low (as in the headlights almost died on me the other night driving home) but there seems to be feedback into the rest of the electrical system because my headlights flicker for a second along with all interior lights and the speedometer needle jumps right as I step on the brake pedal. The battery has been tested and checks out fine and the alternator charges just fine any other time except when the brakes are applied. I'm just curious if there is a common short that can cause this. Thanks!
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I had similar, but not as severe symptoms before. One by one, electrical component upgrades have eliminated it. But the single one thing that helped the most was the "big three". Bigger gauge wire battery to alternator, battery to ground, and engine block ground.
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I think you have a problem in your brake/tail light ckt. What'* going on with the brake lights when this anomaly occurs? Locate the fuse for the brake/tail light ckts. and remove, then try the brakes to check for any change in conditions. Try to localize or isolate the problem to a specific ckt. You're dropping way too much voltage when applying brakes. Voltage to ground?
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Originally Posted by markwb
I think you have a problem in your brake/tail light ckt. What'* going on with the brake lights when this anomaly occurs? Locate the fuse for the brake/tail light ckts. and remove, then try the brakes to check for any change in conditions. Try to localize or isolate the problem to a specific ckt. You're dropping way too much voltage when applying brakes. Voltage to ground?
Follow the negative cable off the battery. It should go right there behind the battery.
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