Chevrolet Silverado Headlight Wiring Diagram — Ricks Free Headlight Wiring Diagram Chevrolet Silverado Here’s the headlight wiring diagram for a Chevrolet Silverado with DRL If you want to troubleshoot a headlight problem in your Chevrolet Siverado, you’ll need this headlight wiring diagram. Headlight wiring diagram 2006 cobalt - Fixya wwwa››Chevrolet›Cobalt›2005 Chevrolet CobaltSOURCE: 2006 chevy cobalt headlights. There is a ring on the back of the headlamp where the wires are connected to the bulb. you will need to twist it (it may seem like it does not twist but it will). once you do that you can then slide the buble assembly out and replace the bulb.