I need a wiring diagram for a 2003 Chevrolet Tahoe. The body wiring harness that powers taillights gas tank.

Note the diagram, hope you can read it. Tail lamps/park lamps, the same thing. This diagram is for right rear, note the fuse, rr park fuse, goes hot when you turn on headlamps or park. at the right rear tail lamp, brown wire with white tracer is voltage, that bottom black wire in diagram is ground. Need both voltage and ground. not only make sure fuse is good, use a test light to see if voltage at fuse when you turn on headlamps. If no voltage, have to backtrack that circuit. good luck.

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