What yr do you have? My 97 Suburban had composite headlights, but I switched to sealed beams to have more room for an intercooler. I did a Cummins swap and needed the room. I wanted to keep side marker lights, as the 94 grille assembly I used only had side reflectors...no light bulbs. I kept my 97 headlight harness and used a die grinder to cut a hole in the back side of the reflector. I then glued a receptacle to the backside of the reflector. (I cut the receptacle from the 97 side marker) plugged the 97 wiring light socket I to that molded reflector. Works fine.