V-Spec Wiring Harness Off Road ATV/Jeep LED Light Bar Wiring Harness Kit - 40 Amp "Single Lead (Heavy Duty)" version recommended for 300W 50"+ light bar IP65 Waterproof Illuminated On/Off Rocker Switch 40A Power Relay & 30A Blade Fuse More than 8ft of wiring 2 sets of power connectors to light fixtures