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Question regarding brake lights

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Old Apr 22, 2010 | 08:17 PM
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Default Question regarding brake lights

I am about finished with my conversion project( Taking a '99 FRC and doing a complete Z06 conversion) and now I can't get the four brake lights to work. The third brake light lights up fine. I have turn signals and hazards. The bulbs are good and I have checked fuse 8 and 15 in the footwell and they are fine. Any other ideas?
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Old Apr 22, 2010 | 08:25 PM
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Originally Posted by NVTHIS
I am about finished with my conversion project( Taking a '99 FRC and doing a complete Z06 conversion) and now I can't get the four brake lights to work. The third brake light lights up fine. I have turn signals and hazards. The bulbs are good and I have checked fuse 8 and 15 in the footwell and they are fine. Any other ideas?
Have you check 12volts and ground at the receptacles?
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Old Apr 22, 2010 | 08:31 PM
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Originally Posted by lucky131969
Have you check 12volts and ground at the receptacles?
No I haven't. Any particular place to check for 12 volts and any particular ground I should check. TIA!
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Old Apr 22, 2010 | 08:34 PM
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Originally Posted by NVTHIS
No I haven't. Any particular place to check for 12 volts and any particular ground I should check. TIA!
Your choice of connector....for the right side:

With the brake pedal depressed: 12 volts at pin A(dark green wire), and check resistance to ground on pin G (black wire).
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Old Apr 22, 2010 | 08:41 PM
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Originally Posted by lucky131969
Your choice of connector....for the right side:

With the brake pedal depressed: 12 volts at pin A(dark green wire), and check resistance to ground on pin G (black wire).
Thanks I will try that tomorrow. Ok I am not an electrical guru, so just to verify, I place the positive lead on the dk green wire and the negative lead on the black wire. I don't want to short something out, so it's best to verify,lol.
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Old Apr 22, 2010 | 08:44 PM
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Originally Posted by NVTHIS
Thanks I will try that tomorrow. Ok I am not an electrical guru, so just to verify, I place the positive lead on the dk green wire and the negative lead on the black wire. I don't want to short something out, so it's best to verify,lol.
That method may give you a false result if you have a bad ground. So what's best, is to make sure the black wire is a good ground, with reference to the chassis...should be 0(or very low) ohms. If you have a good ground at the connector, then you can test for 12 volts like you described with confidence.

Red lead - dark green wire- pin A
Black lead - black wire - Pin G

I'll PM you my number if you have questions....
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Old Apr 22, 2010 | 09:05 PM
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Originally Posted by NVTHIS
I am about finished with my conversion project( Taking a '99 FRC and doing a complete Z06 conversion) and now I can't get the four brake lights to work. The third brake light lights up fine. I have turn signals and hazards. The bulbs are good and I have checked fuse 8 and 15 in the footwell and they are fine. Any other ideas?
Hey Jason,

Look under at the brake pedal area and see if the white wire is cut. I can't remember if that car came with the euro lights.

Tony
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Old Apr 22, 2010 | 10:13 PM
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Originally Posted by lucky131969
That method may give you a false result if you have a bad ground. So what's best, is to make sure the black wire is a good ground, with reference to the chassis...should be 0(or very low) ohms. If you have a good ground at the connector, then you can test for 12 volts like you described with confidence.

Red lead - dark green wire- pin A
Black lead - black wire - Pin G

I'll PM you my number if you have questions....
Thanks Lucky! I'll let you know what I find out and if I have any other questions.

Originally Posted by ajg1915
Hey Jason,

Look under at the brake pedal area and see if the white wire is cut. I can't remember if that car came with the euro lights.

Tony
Hey Tony I will check and see tomorrow. Maybe it will be a simple fix like that,lol.

Thanks guys!!

Last edited by NVTHIS; Apr 22, 2010 at 10:15 PM.
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Old Apr 23, 2010 | 04:20 AM
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Let me know.
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Old Apr 23, 2010 | 11:16 PM
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Hey Tony, turns out the wire was cut so thank goodness for an easy fix. Thanks for the help guys! Everything works as it should now. I just need to figure out why I don't have low beams on my Depos that has HIDS? Any ideas? Could be the bulbs, but both being burned out at the same time make me question that.
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Old Apr 23, 2010 | 11:32 PM
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Originally Posted by NVTHIS
Hey Tony, turns out the wire was cut so thank goodness for an easy fix. Thanks for the help guys! Everything works as it should now. I just need to figure out why I don't have low beams on my Depos that has HIDS? Any ideas? Could be the bulbs, but both being burned out at the same time make me question that.
Hey Jason,

I bet the ballast wires are backwards. A lot of the china stuff have the positive and negative wires backwards. Flip the connector around and see if that works.

Glad I saw your post about the brake lights. Could not remember for sure if that one had the euro lights or not since there have 6 vettes that have passed through here over the last few years.

Tony
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Old Apr 24, 2010 | 12:16 AM
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Originally Posted by ajg1915
Hey Jason,

I bet the ballast wires are backwards. A lot of the china stuff have the positive and negative wires backwards. Flip the connector around and see if that works.

Glad I saw your post about the brake lights. Could not remember for sure if that one had the euro lights or not since there have 6 vettes that have passed through here over the last few years.

Tony
I will check the wiring on the headlights tomorrow. Anyways, glad you saw this post also,lol. I remember I had bought a set of the euro lights to go on my red Z06, but when I found out that you had to cut the wire, I sold them,lol. Oh well, it's all good on that end now.
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Old Apr 24, 2010 | 12:22 AM
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The irony of it all.
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