iJDMTOY Xenon HID Conversion Kit Dual-Relay Wiring Harness for 9004 9007 HB5 Hi/Lo Up To 4 Lamps Features: One set brand new dual-relay wiring harness for 9004 or 9007 HID Conversion Kit. This specially designed double-relay harness will allow you to install 4 pieces HID lamps using a single relay setup. Weight: iJDMTOY Automotive Car Lighting Accessories