On/Off Switch Wiring 12V Car LED Fog Light On/Off Wiring Harness Relay Kit Fog Light Wiring Kit LED Switch Wiring Relay The wiring harness is designed for off road lights and compatible with various vehicles requiring a relay to power auxiliary.It includes a 12V 40A relay, an illuminated on/off rocker switch, and approximately 3.26 meters of wiring.This setup simplifies the installation process for powering LED light bars and fog lights.Material: Plastic Color: Black Relay: 12V 40A Length: approx.3.26m (10.7ft) Package Includes: 1 x Fog Light Switch Wiring Kit Installation Steps: Connect the red positive wire from the fuse to + and the black wire from the relay to -.Connect the light bar wires to the relay, matching red and black accordingly.Connect the red positive and black negative wires of the switch to a power source in the vehicle.Turn on the switch to test the connected light bar.