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

91 rs headlight issues.

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Old 06-08-2019, 09:21 PM
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Car: 91 Camaro rs
Engine: Tbi 305
Transmission: Wc t5
Axle/Gears: 373s
91 rs headlight issues.

All 4 head lights stay on. Low/ hi beam. On low the outters are bright and centers are dimm and vise versa when switched to hi beam. Any ideas why this is happening ? Factory wiring but have aftermarket lenses and h12 bulbs. Need help to pass inspection..


Old 06-09-2019, 12:39 PM
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Car: 92 Camaro RS
Engine: LO3
Transmission: T5
Axle/Gears: stock
Re: 91 rs headlight issues.

You have H4 bulbs. The factory wiring is woefully unprepared for increased use like this. This article from the how-tos section on here explain this problem
https://www.thirdgen.org/headlightupgrade/
You can make your own harness or many are available on line. Just google H4 four light conversion harness
Not sure if they are legal in your state. Might want to check before working on it. May just need to return to normal to pass and then do upgrade
Old 06-10-2019, 04:37 PM
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Re: 91 rs headlight issues.

The low/high H4 bulbs are pinned differently then the stock sealed beam bulbs. Need to move terminals in the harness connector for the low/high bulbs.

Here is a picture of the pin out looking at the rear of the bulb:



RBob.
Old 06-10-2019, 05:34 PM
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Car: 92 Camaro RS
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Re: 91 rs headlight issues.

Right, that fact is mentioned farther down in that how tos article and a diagram of the new wiring layout needed is there as well
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