Review on KAWELL Universal 2 Lead LED Light Bar Wiring Harness Kit: Reliable, Waterproof 12V 40A Fuse Relay for Offroad, Driving, Fog, and Work Lights by Keith Bradley

I've used this with a small (9 inch) light bar and it works well. The length of the straps is clearly designed for a large car and would be great for full size trucks. shortening and modifying both the switch wiring and the wiring to the lightbar to work in my compact sedan. My biggest concern is the harness connector (3 pin) between the switch harness and the relay harness. To route this harness through the firewall, you must either disconnect one of the harness connectors, cut one of the harnesses, or drill a 1" diameter hole in the firewall to allow the harness to pass. Also, the wiring on the side of the switch is very thin (e.g. Cat5), while the wiring on the other side of the connector is much larger in diameter. This connected them without the aforementioned connector. Interesting. The wiring harness also looks good overall, but the relay is incredibly noisy when you turn on the light. I installed the relay in the engine bay next to the battery and I can hear it clicking in the car with the windows closed and the engine running.