While many power supplies can be set to limit their output current to a defined level, to protect the circuit they are powering, no such protection is available if you are powering a circuit from a ...

We show you how to wire in an electric fan relay kit with a thermostatic switch. If you've got an electric cooling fan on your classic car or hot rod and you want to know how to wire it with a relay, ...

I often add additional electronic components to my cars. Amps, auxiliary lighting, etc. What usually winds up happening is that my battery or some junction box has a bunch of wires hopping off of it, ...

Wiring is a dreaded task for many off-roaders faced with installing switches to control multiple auxiliary lights and accessories. Figuring out what gauge wires to use, what type of relays will handle ...

From the March/April 2025 issue of Car and Driver. Like Odor-Eaters in workout shoes, a fuse doesn't call attention to itself until it stops working. These circuit breakers have two states: letting ...

Whether you're in need of a replacement electrical fuse system for an old vehicle or you're needing to wire a vehicle from scratch, there's a way to put together a reliable fuse block on a budget. If ...