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Old 08-16-2012, 07:05 PM   #1
that1wagon
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Default Brake Lights no longer work at all?

Soo I was informed two days ago by a friend that while he was driving behind me that I had no brake lights when stopping. I pulled the fuses and checked them but they were fine and replaced them anyways. Next i checked the bulbs which all appear fine. My last thought was the brake light switch. I went and bought a new one and installed it and got nothing; so I ruled out the switch as well. My only other thoughts are a ground or a short somewhere in the circuit. If anyone has had a similar problem and found the answer, has any other suggestions, or can provide me with any wiring diagrams for the brake lights that would be awesome. The car is a 2004 wrx wagon.
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Old 08-16-2012, 07:07 PM   #2
06stidude89
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Make sure the little button that hits the switch has not fallen off the pedal. I had that happen on my 240 and I just simply put a bolt and nut through the hole so the switch was actually being pressed.
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Old 08-16-2012, 09:04 PM   #3
that1wagon
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nope that's not it. that happened once in my old ford escort and the brake lights stayed on all the time lol. I even tried replacing the brake light switch to see if the switch itself was the problem and that didnt fix it. tonight my buddy and i noticed there is a green and red wire running to each tail light bulb and i figure those wires run together somewhere and that is what triggers the brake lights. we tested the wire and got no current. so now i am waiting to find a wiring diagram to trace where that wire leads to see if we can figure it out.
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Old 08-18-2012, 01:43 PM   #4
that1wagon
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anyone have any links to some wiring diagrams for the brake light switch or just brake lights in general?
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Old 08-18-2012, 02:52 PM   #5
Cougar4
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If you haven't checked your fuses yet you need to do that before anything else. Check fuse 16 in the dash panel and make sure power is getting to both sides of the fuse. If you don't have power getting to it then check fuse SBF-2 in the main panel under the hood. If power is ok then check to see if power is getting past the brake switch. You should at least have a test light probe to verify power with.
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Old 08-19-2012, 01:50 AM   #6
jonthesloth
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Quote:
Originally Posted by Cougar4 View Post
If you haven't checked your fuses yet you need to do that before anything else. Check fuse 16 in the dash panel and make sure power is getting to both sides of the fuse. If you don't have power getting to it then check fuse SBF-2 in the main panel under the hood. If power is ok then check to see if power is getting past the brake switch. You should at least have a test light probe to verify power with.
Listen to every word this man says.
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Old 08-19-2012, 12:41 PM   #7
that1wagon
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thanks man Ill check both later tonight when I get home. Hopefully this is the problem.
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Old 08-19-2012, 02:21 PM   #8
Cougar4
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Quote:
Originally Posted by jonthesloth View Post
Listen to every word this man says.
Thanks for the vote of confidence here JTS. I try to get the right info out to help others here. I have to be careful because sometimes I can go way off on the wrong trail.

You're quote reminds me of a verse that Mary said about her Son, and He always said the right thing when it was needed.
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Old 08-19-2012, 10:20 PM   #9
that1wagon
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I have power at all of my fuses. Haven't gotten around to checking for power after the brake light switch but I have a feeling it will come down to a wiring problem between the switch and the lights themself. I did find a wiring diagram that shows the wire running from the brake light switch going to connector B97 in the rear bulkhead wiring harness.
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Old 08-19-2012, 11:20 PM   #10
that1wagon
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I just tested the wires running to the brake light switch and found that i was getting no power to the switch itself. the fuse was still good but the wire running from the fuse to the switch is where my problem is. as a temporary fix i ran a jumper wire from another power source to the switch and everything is good so far.
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Old 08-19-2012, 11:57 PM   #11
Cougar4
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Winestone

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Good job. Start the hunt by looking for a bad connection on the back side of the dash fuse panel that ties to fuse 16. Make sure power is getting to that wire connection.

If you need to get connector B97 my info shows it under the passenger side of the dash near the side of the car.

Last edited by Cougar4; 08-20-2012 at 12:06 AM.
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