1989 GMC Topkick Light Relays, Sensors & Control Modules
- ACDelco®Professional™ Headlight Switch ConnectorGMC C7000 1989, Professional™ Headlight Switch Connector by ACDelco®. Finish: Black.$28.00
- Standard®Headlight Wiring HarnessGMC Topkick 1989, Headlight Wiring Harness by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...Premium parts you can rely onDesigned to restore functionality$27.96
- Keep It Clean®Headlight Relay KitGMC Topkick 1989, Headlight Relay Kit by Keep It Clean®. Looking to maintain the top condition of your electrical system? Keep It Clean is ready to help you! Just choose from our immense selection of premium replacement electrical parts...Increases Your Headlight Output By Delivering More Amperage to Your BulbFactory Harness Compatible$20.85