I ordered all the parts from GM here are the numbers (2) 10335108 lamps, (2) 12085498 connectors, (1) 20847185 trim, (1) 20847186 trim. OEMPARTS123.com has everything in stock and seems to have the best delivered price.
The connectors come with about a foot of wire, long enough to reach the back of each headlight. I used (4) 3M scotch locks (blue) on the yellow and black wires at the back of each headlight. I installed the scotch locks between where the wires leave the headlight housing and the connector so the body harness has no modification. To access to the rear of the headlight assembly I removed the tires and fender liners, I tried working through the headlight service hole and did not have enough room.
This install may not be legal in your area, the fog lights are always on with the low beam headlights and do not go off when the high beams come on.
The connectors come with about a foot of wire, long enough to reach the back of each headlight. I used (4) 3M scotch locks (blue) on the yellow and black wires at the back of each headlight. I installed the scotch locks between where the wires leave the headlight housing and the connector so the body harness has no modification. To access to the rear of the headlight assembly I removed the tires and fender liners, I tried working through the headlight service hole and did not have enough room.
This install may not be legal in your area, the fog lights are always on with the low beam headlights and do not go off when the high beams come on.