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 ...

In our July '07 issue, we showed the installation of Reen-machine's high-performance halogen headlight system that fits all '65-'68 and '70-'73 Mustangs ("How to Upgrade Your Headlights," p. 38).