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 ...

Last month we discussed the basics of your car's 12-volt electrical system with the goal of understanding enough to trace problems to a particular electrical component. This month we're going to delve ...

See Below: Unique new Comagination dual headlight modulator includes a solid-state relay! Give me some metal and a few tools and I’ll build anything. But when it comes to electricity, I’m dumbstruck.

It's a dark and stormy night. Made even darker because the headlights on your car have suddenly quit. The car runs fine--but you have to have it towed to a garage. Tow: $85. Labor to replace headlight ...

Few things are more intimidating than sudden darkness on an isolated stretch of road. If you've been driving a classic Mustang for any time at all, you've probably lost your headlights at least once.

An electrical relay is a type of heavy-duty, remote-control switch able to handle high-current accessories, yet capable of being actuated by substantially less current. Relays install between the ...