DDM Tuning Heavy Duty Dual Relay HID Harness: Universal 9006 Inputs/Outputs, 1 Year Warranty-FBA Premium Heady Duty Dual Relay Xenon Conversion HID Harness, 1 Year Warranty Designed to supply proper current and voltage to the HID system by using the stock wiring as a trigger for the relay. Plug and play use with all DDM HID kits (as well as most on the market). It's designed so both relays send power to both lights. What does this mean for you? If in the extremely unlikely even 1 relay fails, both lights will still function as normal and you won't be left in the dark. This is the ultimate in HID harness functionality. Built with 2 heavy duty waterproof relays and a waterproof fuse holder this harness can take the abuse of anything you threw at it. All wiring is protected by a durable mesh covering to protect against wear. Wire length from relay: Power: 32 inch Ground: 7 inch (grounded at each output) Input / Output 1: 18 inch Input / Output 2: 68 inch