Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

brake lights

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Old Mar 4, 2009 | 03:10 PM
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brake lights

ok first i was having a problem where the fuse would blow every time i pulled the light ****, it ended up being a bad ground for the radio, now i got that solved i have no brakes lights, all the other lights work fine, where should i start ?
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Old Mar 5, 2009 | 04:11 PM
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Re: brake lights

anyone ? i read something about the brake light switch, could this be the cause ?
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Old Mar 5, 2009 | 06:27 PM
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Car: 87 Evoluzione, 84 TransAm, 05 GTO
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Transmission: (2) T56 & (1) 700R4
Axle/Gears: Moser 12-bolt w/3.73 & Stock
Re: brake lights

There is a plunger switch against your brake peddle. There should always be power going into it and the other wire hot when you push the peddle in. You'll want a test light probe. Got mine at the dollar store.

Check all your fuses.
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Old Mar 15, 2009 | 11:43 AM
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Re: brake lights

Originally Posted by ACCLR8N
There is a plunger switch against your brake peddle. There should always be power going into it and the other wire hot when you push the peddle in. You'll want a test light probe. Got mine at the dollar store.

Check all your fuses.
ok so i finally got a chance to check this today (nice weather) the switch has 2 plugs in it (one white one black) with two wires in each, in the white plug with the brake pedal depressed both wire have power and when pressed only one has power, the other plug (black) has no power weather its depressed or not, is it working right ? what esle should i check, Thanks.

Last edited by AKATDOG; Mar 15, 2009 at 01:47 PM.
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Old Mar 15, 2009 | 05:32 PM
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Re: brake lights

The brake pedal switch you're looking for has an orange wire and a light blue wire. The orange wire supplies 12V from the fuse and the switch sends it to the brake lights through the light blue wire when the pedal is depressed.
With a test light, it should be pretty easy to find out whether the switch is operational or not.

Wiring diagram here: http://www.geocities.com/vtcamaro/Pi...rams/pg186.jpg

Hope this helps.
Lou
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Old Mar 15, 2009 | 06:04 PM
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Re: brake lights

is it not the switch at the top of the brake pedal similar to this
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Old Mar 26, 2009 | 12:52 PM
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Re: brake lights

OK, still working on this any help much appreciated, can someone tell me if my switch is working correctly, everyone says the switch only has 2 wires but mine has 4 and i labeled the picture for details, Thanks.
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Old Mar 26, 2009 | 04:05 PM
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Re: brake lights

Yup, the orange and blue wires are for the brake switch.
If you don't have any power to the orange wire, check the STOP/HAZ fuse. Even if it's good, it might be not seated 100% right, causing bad contact.
Do your hazards work?

Lou
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Old Mar 28, 2009 | 02:41 PM
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Re: brake lights

Originally Posted by BigBabyLou
Yup, the orange and blue wires are for the brake switch.
If you don't have any power to the orange wire, check the STOP/HAZ fuse. Even if it's good, it might be not seated 100% right, causing bad contact.
Do your hazards work?

Lou
Thanks for the help lou, for some reason when i pulled the hazards the fuse would blow, i put a 10amp fuse there (was a 5 amp) and it seems to be working now, brakes and hazards... not sure why there connected, dont they have seperate fuses ? also is it ok that i used a 10amp fuse instead of 5 ?
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Old Mar 28, 2009 | 10:56 PM
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Re: brake lights

No wonder the fuse blew, somebody put a tiny fuse in there. That circuit feeds the stop lamps (60W) and hazards (80W) so the fuse rating is 20A. Put in the right fuse size and you should have no problems now.

Lou
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