Cab Roof Lights Question

By Georgebaumann
October 5, 2010 in Ask A GM Technician

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Georgebaumann

Posted October 5, 2010

iM putting cab roof lights on my 2002 gmc sierra sl 1500. when i took down the top part there were two wires already ran there i guess from the manufacturer and were cut. there was 1 black wire and 1 gray wire. I took the one of the wires and it ran to the aux lamp switch wat does the other 1 do. and how do i hard wire it to my auto lights?

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