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Old 01-22-2005, 12:16 AM   #1
pyropoptrt
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1993 Subaru Legacy
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Unhappy 1993 Legacy Brake Light issues

Hey Guys and Gals, I am having some eletrical problems with my subie. When I press on the brakes the brake lights don't light up. When I turn on my headlights the tail lights come on but the brake lights won't light when the brake is pressed. I have already checked the fuses and they are fine. Does anyone else have any suggestions on how to fix this?

P.S. I am having some other eletrical issues but this one is the most important right now.
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Old 01-22-2005, 07:35 AM   #2
Mulder
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Have you checked the bulbs? I'm not sure what type of bulbs you have on your car but they may be dual-filament types and if so it's entirely possible to have the filament for the brake light burned out on both bulbs while the parking light filament still works. The other thing to check is the brake light switch attached to the brake pedal linkage.
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Old 01-22-2005, 10:17 AM   #3
pyropoptrt
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I am pretty sure that it is not the bulbs, because the third brake light does not light up either. Well, I just pulled the lower part of the dash to look at the brake light switch and I the switch is plugged in but it has a black connector that looks like it comes out of that switch that is not plugged into anything. Is there any kind of test using a multimeter or something to test to see if the switch is good?
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Old 01-22-2005, 10:44 AM   #4
Mulder
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You can do one of two things- either probe both sides of the switch with a voltmeter, you should see voltage on one side and not the other until you step on the brake, then you will see the same thing on both sides with the switch closed. Depending on whether it's a switched voltage or ground system that will be either 12V or 0.
Or, disconnect the switch and put an ohmeter or continuity tester across it. with the brake pressed there should be continuity, as close to zero ohms as possible.
The voltage test may be more reliable since it actually shows you what the circuit is doing as well as the switch. If you don't see any voltage there with the switch open there is a power or wiring issue someplace.
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Old 01-22-2005, 07:38 PM   #5
tooocool49723
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Yeah, it's something to do with the wiring on the brake light switch. Time to hunt wires.
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Old 01-24-2005, 01:56 AM   #6
pyropoptrt
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I have checked all the fuses in the fuse panel that could be remotely related to the brakes and they are all fine. I took the lower part of the dash off to check the plug on the brake pedal. There seems to be two plugs; the main one is plugged in but there is another with the same wire colors that is not plugged into anything. I tried looking around the wires and trying to find a matching harness but I could not find one. Can anyone get me a pic of what it is supposed to be plugged in to?
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