This kit is a plug-and play harness using sealed relays and OEM connections designed to drive and brighten the headlight system for C5's using the H4 EURO spec. headlamp housings. System attaches to the alternator stud or battery positive junction and increases brightness by as much as 30%! Necessary addition when using high wattage H4 bulbs. Sealed relays included. Top quality kit uses all OEM wiring and connections.
Note: Electrical components such as switches and actuators are Non-Returnable Parts
Always refer to a factory service manual when diagnosing electrical service problems. You can damage electrical components if the proper procedures are not followed. Be sure you are replacing the correct part.