1988 Chevy Truck light problems

1988 CHEVROLET TRUCK
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TONYC73160
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  • 1 POST
Engine Mechanical problem
1988 Chevy Truck V8 Four Wheel Drive Automatic

ok when i turn my headlights on i have no dash lights but when i turn my turn signals on my whole dash blinks fast. and i have no brake lights or tail lights or reverse lights.i checked fuses and lights. but i have headlights and even when they are on still no tail lights or anything. i checked and it is getting power all the ways to the brake connector ( it has the tail lights that you unplug then take the bulbs and houseing together and it takes the wedge based bulbs.) should i replace all the bulbs and go from there? the dimmer swith for the dash was the first thing i checked..
May 11, 2010 at 3:33 PM
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INTERNETMECHANIC
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I'd check circuits at the headlamp switch, for tail lamps. Any applicable fuses, did you use a voltage tester on the fuse circuit? Even if the fuse is good, if no voltage, the circuit is dead. You may also have a problem with the turn switch or wiring. Usually the lower brake lites are wired through the turn switch. You can also check the feed to and from the brake switch. Sometimes the dimmer control for interior lites, gets turned all the way down, no dash lites. There is an instrument lamps fuse circuit. Below is wiring diagram for headlamp switch, the brown wire carries voltage for tail lamps. The orange wire is voltage for that side of headlamp switch.


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May 11, 2010 at 4:19 PM
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