A myriad of electrical gremlins can come to light with a car’s age—bad terminals, broken wires, blown fuses, and even fried relays. Knowing how to diagnose those problems can be the difference between ...

A battery in a traditional car cannot directly create engine spark. It’s only rated at 12 volts, after all, so it needs a little help boosting the signal to the spark plugs. To make that happen, a car ...

A relay is an electromechanical switch that controls the circuit flow of electrical power. It is a critical component in various devices, including home appliances, automobiles, and industrial ...

An ignition coil takes voltage from the battery and multiplies it to create a spark at the spark plugs, which in turn ignites the engine. Cars have been using some form of the coil ignition system for ...

An ignition coil is a crucial component of a vehicle’s ignition system, responsible for converting the battery’s low voltage into the high voltage needed to ignite the fuel-air mixture in the engine.