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I'm trying to add things like TV's and neon lights. My question is when the instruction says connect to the negitive side on the battery which is connected to the body of the car, do i just drill a hole into the body of the car and ground it like an amp.. Or do i really have to run a line all the way back to the NEGITIVE side of the battery????????

 

You can do either, whatever is easier for you, as it's the same ground. Make sure u take off the paint and use a wire brush if u ground to sheet metal