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THE DASH LIGHTS ARE USUALLY CONTROLLED BY A SMALL THUMB WHEEL NEAR THE HEADLIGHT SWITCH ON THE DASH. THAT IS A RHEOSTAT, THAT MAKES THE DASH LIGHTS BRIGHT & DIM. REPLACE OR BYPASS IT.
It sounds like a bad ground. Check the ground circuits to your dash lights as well as check out your tail lights to make sure they are working properly. (The tail lights run on the same circuit as the dash lights, although tey have a separate grounding point.) The gauges are most likely going goofy because the dash and/or tail lights are trying to pull ground through the gauges circuit.
Look at fuse #18, a 15 amp fuse, in the fuse block. This fuse powers both the tail lights and instrument cluster lights. Usually both of these light systems are powered by the same fuse so when your cluster isn't lit up you'll know right away that your tail lights aren't working as it's not safe to drive without tail lights. Your brake, turn, and head lamps are powered by different circuits. Hope this helps and good luck!
You probably have an open/blown tail/park lamp fuse. The dash light fuse gets power from the tail/park lamp fuse, so when you can't see your dash lights, you'll get the vehicle looked at and find you have no park/tail lamps either. It's a safety feature because otherwise you may never know your running lights are not working.
Check your park/tail lamp fuse.
Hi its rob here what make and model of car is it? it sounds like the light switch is faulty but that wouldnt stop the brake lights workin try two stop and tail light bulbs then if you have stop lights your switch is at fault
i had one do about the same thing it also affected the headlights / dash and running lights what was found was broken wires by the passenger side trunk hinge the wires are in a flexable wire covering that runs from fender by the hinge up to the tail light lisc plate light wires were broken in there prob. from wear and tear
The Dash and Tail lights connect to the same fuse in most cars. if the fuse is okay, check to make sure the tail lights and/or dash lights are properly grounded. all bulbs could be blown...but highly unlikely.
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