Dash lights come on when pushing the brake pedal - Team Camaro Tech
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post #1 of 8 (permalink) Old Mar 18th, 15, 07:58 PM Thread Starter
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Question Dash lights come on when pushing the brake pedal

Hey guys,

I have a 67 convertible that I've owned for 9 years now and I just noticed last night that the dash lights come on every time you press the brake pedal. Has anyone ever experienced this problem before? If so, how did you correct it? BTW, the dash lights work just fine with the switch and there are no other lighting problems as everything works as it should. Thanks,
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post #2 of 8 (permalink) Old Mar 18th, 15, 10:43 PM
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Brian
 
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Re: Dash lights come on when pushing the brake pedal

Can be a few things but most likely feedback or bad grounds for the instrument cluster, or bad brake switch.

The ground is through the paperclip looking thing the screw mounts through by the high beam indicator. Lots of folks with 67 & 68 add a real ground wire to the cluster and then connect it to the dash frame. Search a few posts here in electrical on instrument light or dash cluster grounds.

Brake light switch can be debugged or just swap a new one in. They are under 10 bucks at most big box auto parts places. Do you have the wiring diagram if you want to debug instead of swap?


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post #3 of 8 (permalink) Old Mar 19th, 15, 08:46 AM
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Re: Dash lights come on when pushing the brake pedal

I would also check grounds first, I had the same thing happen on a car I was restoring. There was a broken bulb, the internal parts of the bulb were touching allowing current from the brake lights to back feed into the taillight circuit which in this case is the same circuit as the dash lights.
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post #4 of 8 (permalink) Old Mar 19th, 15, 09:56 AM
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Re: Dash lights come on when pushing the brake pedal

It's not the brake light switch. When the brakes are applied the voltage is being back feed through the taillight circuit to the dash lights. This might be due to bad ground or could be wrong or improperly installed bulb in the rear. I think I would start by checking for proper bulbs and grounds on the tail lights.

Jeff
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post #5 of 8 (permalink) Old Mar 20th, 15, 08:09 AM
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Re: Dash lights come on when pushing the brake pedal

bld22663,

Are you using standard bulbs or new LED bulbs.
I saw this happen during when my LED conversion.

-Joe

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post #6 of 8 (permalink) Old Mar 20th, 15, 06:36 PM Thread Starter
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Re: Dash lights come on when pushing the brake pedal

Joe,

You may have hit the nail on the head because I just recently installed LED's in the rear and they could be causing the problem. I'll put the old bulbs back in this weekend and see if that corrects the problem. Thanks all,
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post #7 of 8 (permalink) Old Mar 20th, 15, 07:15 PM
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Re: Dash lights come on when pushing the brake pedal

Also make sure you have the correct bulb in each hole.

If you put a single contact bulb in a double contact socket, this can happen.

Lynn
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post #8 of 8 (permalink) Old Mar 21st, 15, 08:42 PM Thread Starter
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Re: Dash lights come on when pushing the brake pedal

Joe,

You were spot on! I replaced the new LED's with the standard bulbs a the problem went away. I guess some things are better left alone.

Thanks,
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