A universal relay wiring kit for fitting various 12V devices to your car, such as our LED driving lights SL3920/SL3922. It is a complete ready to use harness with fused battery connections, horn relay, in-cabin toggle switch, and waterproof 2 pin connection with 2m of extra wires to connect to the 12V load you want to control. The cables are fully protected inside a loom tube. It also includes a short double adaptor lead so that you can fit two or more of these wiring harnesses and control them with the one switch - for example if you want to control a pair of SL-3920 LED driving lights.