[bilfman]

Originally Posted by hrc200x

The wiring should go down the post between the windshield and door and come out just to the left of the gauge cluster. Should have a factory grommet that fits tight in a hole. Power goes to a pin on the side of the pull out headlight switch. If I recall each light has its own ground that clips to the metal of the cab, you'll have to take off each amber light to see the ground.

As he said. If you look under your dash drivers side there is a grommet with a single wire coming out. If memory serves me correct it is about 3 -4 inches above the actual light switch on the side of the cab under the dash. And yes, each light is individually grounded with a little clip just under the light gasket.