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markeb01 · 02-18-2012, 02:37 PM

I’d suggest it’s time to break out the continuity tester and start analyzing what you have. Post #9 on the following thread has an excellent wiring diagram for the 1963:

http://67-72chevytrucks.com/vboard/s...d.php?t=499476

And while repairing or updating the wiring, it’s always a good idea to add separate ground wires to all the light buckets. Terminate them either to the frame, or preferably to a common wire running back to the battery. This eliminates a lot of future gremlins in the wiring system. Most of the factory ground circuits are either undersized, or depend on returning to the battery through sheet metal for the ground side of the circuit. 50 years of corrosion, paint, and dirt creates all sorts of random electrical problems. Replacing the 16 and tiny 18 gauge grounds with 14 gauge wire will keep the system healthy from now on.

02-18-2012, 02:37 PM	#2
markeb01 Senior Enthusiast Join Date: Feb 2007 Location: Spokane Valley, WA Posts: 8,356	Re: Tail lights I’d suggest it’s time to break out the continuity tester and start analyzing what you have. Post #9 on the following thread has an excellent wiring diagram for the 1963: http://67-72chevytrucks.com/vboard/s...d.php?t=499476 And while repairing or updating the wiring, it’s always a good idea to add separate ground wires to all the light buckets. Terminate them either to the frame, or preferably to a common wire running back to the battery. This eliminates a lot of future gremlins in the wiring system. Most of the factory ground circuits are either undersized, or depend on returning to the battery through sheet metal for the ground side of the circuit. 50 years of corrosion, paint, and dirt creates all sorts of random electrical problems. Replacing the 16 and tiny 18 gauge grounds with 14 gauge wire will keep the system healthy from now on.