Relay Wiring Diagram Light Bar. 86 chassis ground 85 12v trigger from switch 30 14 gauge 12 from battery minimum gauge is 14 for two lights 87 14 gauge out to red wire on lights maximum 2 lights per relay pack. This is your guide on how to install a universal relay harness wiring set with an on off switch.
Identify the wires of headlights. Each relay should be wired as follows. Relay case how to use relays and why you need them onallcylinders.
To much amp draw will fry wire and burn out switches.
How to wire led light bar without relay. 86 chassis ground 85 12v trigger from switch 30 14 gauge 12 from battery minimum gauge is 14 for two lights 87 14 gauge out to red wire on lights maximum 2 lights per relay pack. To much amp draw will fry wire and burn out switches. Identify the wires of headlights.