Ready-made wiring harness and relay kit makes it easy to add relays to a motorcycle headlight. Adding a relay can improve headlight output, reduce load on switches and allow higher wattage bulbs to be ...

The robust wiring of the relay’s harness helped bring full power to the headlights, lending them a greater apparent brightness. We’re not sure if it was the result of the wiring, the relay or both, ...

Halogen headlights can generally be powered via your classic Mustang’s headlight switch. However, if to do it right, opt for a headlight relay and take the load off your Mustang’s headlight ...

In this month's issue, we're going to start repairing the headlight switches and horn relay inside our 1969 Barracuda. Check out Mopar Muscle Magazine for more details along with photos ...

We use our Project Black Sheep Dodge truck, fitted with HID headlights, to show you the electrical wiring basics of installing your own off road lights inside 4-Wheel & Off-Road Magazine.