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Re: 70 GMC parking lights in grill don't come on
get a tester and see if you have power at the plug, check with a different ground and islolate the problem to the plug conntection, bulb, or ground. if those check out and it still doesn't work you can run a new hot wire off the headlight switch.
I'm guessing you won't have to do that though.
prob ground issue.
changing electrical problems is a game of elimination.
Mark
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