Have a lighting issue cant solve...NEED HELP

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1988-1998 Chevrolet Pickup

Formally called the Chevrolet C/K, C/K is a series of trucks manufactured by General Motors and marketed under the Chevrolet and GMC brands. The C/K line includes pickup trucks, medium-duty, and heavy trucks.

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Kevin frazier @wickiwicki

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Posted: May 10, 2017

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Have a lighting issue cant solve...NEED HELP

I installed led lights on my 92 cheyenne recently everything works fine but on the left side i cannot make things work i mash the brake it doesnt work turn signal and lights do. I flip the led bulb over and my brake and lights work turn signal doesnt. I have changed circuit board flasher bulbs brake switch and column harness. Any ideas will be much appreciated

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Hi,

Try running a temporary earth wire (from anywhere on the chassis - make sure it is a clean, bright surface) to the left side tail light assembly earth connection (usually the black wire) and see if it works OK. Thinking perhaps the earth wire is faulty and lights are working through feedback paths and the LEDs (diodes) make it work one way or the other depending on how they are connected, (you said that you had flipped the bulb over). Just a thought.

May 11, 2017 by jayeff

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Hi,

Try running a temporary earth wire (from anywhere on the chassis - make sure it is a clean, bright surface) to the left side tail light assembly earth connection (usually the black wire) and see if it works OK. Thinking perhaps the earth wire is faulty and lights are working through feedback paths and the LEDs (diodes) make it work one way or the other depending on how they are connected, (you said that you had flipped the bulb over). Just a thought. — jayeff

1988-1998 Chevrolet Pickup

Have a lighting issue cant solve...NEED HELP

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