Quality Harness: Sealed relays, sealed fuses, copper connectors - buy the best HID kit relay harness for your vehicle. Some vehicles require the installation of a relay harness when upgrading to an HID kit as a result of can BUS technology. If your vehicle's fog lights are strobing like crazy after an Hid kit installation, pick up XenonDepot's specially designed "HID kit Relay harness" to solve the craze! Two-Pack: Unlike lower priced alternatives, you'll actually get 2 relay harnesses with each purchase: one complete harness per side. We believe that when using a relay harness, each ballast/bulb should have it's own independent fused relay harness to ensure both your fog lights don't go out if something fails. That aside, we also provide you with TRULY sealed relays, fuse holders, and tinned copper connections to ensure this harness meets tough automotive uses.