The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Rear tail lights... Only some work but not always?

willett · 04-09-2014, 01:48 PM

No power = no continuity

Asuming you tried grounding everything properly it sounds like you have a poor connection or a bad wire on the hot side of the circuit. Dig up a wiring diagram on here and find out which colour the tail light wires are. Start at the fuse block and check power at your fuses. If that's good check power on the wires where they come out at the back of the fuse block. A few feet past that if memory serves me right there are some weatherproof connectors that may not be weatherproof anymore.

Get a wiring diagram and fire up that multi meter. I notice your out Ontario way, I hear they're not afraid to use road salt out there

04-09-2014, 01:48 PM	#8
willett Another Day, Another Dollar Join Date: Nov 2008 Location: North Vancouver, BC Posts: 1,316	Re: Rear tail lights... Only some work but not always? No power = no continuity Asuming you tried grounding everything properly it sounds like you have a poor connection or a bad wire on the hot side of the circuit. Dig up a wiring diagram on here and find out which colour the tail light wires are. Start at the fuse block and check power at your fuses. If that's good check power on the wires where they come out at the back of the fuse block. A few feet past that if memory serves me right there are some weatherproof connectors that may not be weatherproof anymore. Get a wiring diagram and fire up that multi meter. I notice your out Ontario way, I hear they're not afraid to use road salt out there __________________ -78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box "its hip to be square"