Question Led lights for a C3

Sergio79

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The lights of the dash gages of my 79 vette were pretty much all burnt. I though it would be cool to replace with them LED light. I pull the dash and the console and replace the dash bulbs with LED. Now the console gages (oil pressure, engine temp and voltage only work when I turn the car lights on ....??? Just on day light, the console gages don’t work with the exception of the gas tank gage. I read stuff about the polarity of the LED. Are the LED compatible with the C3 electrical system ? Or did I only f/up the 30 years old printed circuit in the back of the console in removing the old bulbs and re-installing the new LED ? Thank you.
 

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The lights of the dash gages of my 79 vette were pretty much all burnt. I though it would be cool to replace with them LED light. I pull the dash and the console and replace the dash bulbs with LED. Now the console gages (oil pressure, engine temp and voltage only work when I turn the car lights on ....??? Just on day light, the console gages don’t work with the exception of the gas tank gage. I read stuff about the polarity of the LED. Are the LED compatible with the C3 electrical system ? Or did I only f/up the 30 years old printed circuit in the back of the console in removing the old bulbs and re-installing the new LED ? Thank you.

Normally polarity is not an issue with LED. The only issue I’ve had with conversions is being forced to add a resistor for things like headlights and cruise control functionality due to the low draws compared to the incandescent system design.
You should be able to simply buy like for like LED bulbs and plug them in. They are available for pretty much any build design. Lots of places to get them online cheap. Google and a bit of forum mining will find you a good supplier quickly.

Good luck.
 

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