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Veteran Member

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Gauge lighting question


I installed a aftermarket tach in my car, hooked everything up to what seemed to be the proper connections, however now the light on the tach is very bright when I turn on lights and the lights in the factory gauges are very dim. Wondering if this a power drain issue and if you have to put some kind of resister in the line with the new tach? It says the tach uses a 2 watt bulb which seems high to me?

Any help would be appreciated. 



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Poncho Master!

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If you dim the dash lights what happens ?

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Uber Guru

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Could be just the bulb(bright).If you pop the bulb out of the tack do the dash lights brighten (grounding)?



-- Edited by hawkeye5766 on Saturday 5th of August 2017 10:22:56 PM

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Veteran Member

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The dimming switch dims the lights, but then you can't see the other gauges at all. I have it hooked up to a good ground I believe. I guess I could try to find a smaller watt bulb?



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Canadian Poncho Superstar!

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Just for laughs, take the bulb out of the tach and see if everything returns to normal. I suspect a lower wattage bulb will solve your problem.

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Veteran Member

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Yes I tried this and it did work, now trying to find a lower wattage bulb to put in.



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