No tail lights

Asked by Dec 06, 2016 at 12:46 PM about the 1974 GMC C/K 10

Question type: Maintenance & Repair

So I have a 74 gmc custom deluxe k10 truck and
my tail lights, break lights or turn  signals  don't
work but the 4 way flashers work I checked fuses
all good and can't find any loose wires or bad
grounds need help.

1 Answer

6,635

Start checking voltage at the wire plugs/connectors under frame all the way to the relay and light switch til u find it. Most of the time it's just a bad ground, corrosion

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