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Old 01-27-2022, 10:35 PM
JPN_GP JPN_GP is offline
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Join Date: Jun 2021
Location: Washington State
Posts: 22
Default Need help confirming tail light/brake light wiring for 67 Grand Prix

Hey all,

I've been working on getting my GP a driver and one of the small projects is to get the lights functional. Fortunately the lights do turn on but the harness has had new sockets installed with a bunch of splices and as a result I'm not sure what the correct wiring is. I consulted the FSM and the GP seems to be different from the diagram since there's 2 sockets per side on the diagram (unless I'm misinterpreting) but on the car there's 3 sockets per side, because of the unique to GP tail light housings. The thing that's confusing me is that the centermost bulb socket in the taillight housing only has 1 wire, instead of the 2 wire socket for the brake lights. The driver's side of the harness is in the best condition and since there's only 1 crimp connector I believe the wiring to mostly factory but again I'm not sure. Any ideas?

I should also mention that the outer 2 lights are using a 1157 bulb and the inner is using a 1156
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