Question about 1999 Buick Regal

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All dash light r on when it rains lights go off when dry out a lights come on i think its a ground wire but cant find it some 1 told me its my bsm mod control

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Hi! Maybe and maybe not. Try checking on the fuse/relays under the hood for moisture may build up when its cold thats why your dash lights are on when raining but will go off when dried up. Try replacing the cracked relays for those are the ones who gets the moisture. HOpe this helps and have a good one!

Posted on May 09, 2010

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Posted on Jan 02, 2017

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Hi


Check all your connections under the hood, and check to see where the water is penetrating, check especially the battery connects. Usually the cause of a no start in rain/high humidity conditions is that the spark voltage is arcing to the engine metal rather that to the spark plug because of worn out spark plug wire insulation. You may be able to observe this when the engine is running at night in a dark location when it is wet outside by opening the hood and observing for arcs jumping out from the spark plug wires. The distributor cap could also be cracked which can also short the voltage to ground. It is suggested to replace the spark plug wires and look carefully at the distributor cap for any signs of a crack.


Please get back to us if you have further query else please accept the suggestion.

Thank you for contacting fixya.com

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Don't have any dash lights or tail lights , changed light switch, dimmer switch and body modual did not help and all fusses are good all grounds are good, any new idears would be a great help


Welll.... It's time to use a test light. Take the main fuse out and test all the wires on it for power. Determin which wire is driving lights (tail lights) and i would hot wire it to either a power wire from the dash or from the Tail lights. This just might fix everything.
Please leave a good feedback for me on here.
Thanks
Hope this helps.

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time to fix problem:
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hi
im dave
im not sure which ground you cleaned and changed but i would start with the oone closest to the problem area. Look under the kick panel at your left ankle or under the dash where the light switch is. Is your floor wet after these rains along that sidewall where your left foot would be? Could be you have a leak in the windshiel allowing water in there and shorting your ground.
let me know how this goes

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