tail lights

1993 GMC SIERRA
130,000 MILES • V8 • 2WD • AUTOMATIC
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KAAACEEE
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I have a 1993 GMC sierra k1500 I have replaced the taillght lamps, put in new flasher, fuse's are ok. All the lights work. but When I turn on my headlights the back taillights don't come on. whats wrong?
Mar 5, 2011 at 2:08 PM
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JDL
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Did you check for voltage at applicable fuse? Use a voltage tester. At the rear, brown wire is voltage for tail lamps, goes hot/voltage when you turn on headlamp switch. Any voltage?
Mar 5, 2011 at 5:05 PM