Wasted spark explained The wasted spark system is an ignition system used with some four-stroke cycle internal combustion engines. In a wasted spark system, the spark plugs fire ...

Speedometer A speedometer or a speed meter is a gauge that measures and displays the instantaneous speed of a land vehicle. Now universally fitted to motor vehicles, they started ...

Starter motor explained The other major electrical component in your car's electrical system is used only a few times a day but is the single largest power user and most critical ...

Stop lamps (brake lights) Red steady-burning rear lights, brighter than the rear position lamps, are activated when the driver applies the vehicle's brakes. These are called ...

Throttle position sensor (TPS) A throttle position sensor (TPS) is a sensor used to monitor the position of the throttle in an internal combustion engine. The sensor is usually ...

Trip computer A trip computer is an onboard computer device fitted to cars which can generally record distance travelled, average speed, average fuel consumption, and display ...

How to Use a Voltmeter to check battery condition A digital voltmeter can check and test electrical components such as a control relay or an ignition coil to help pinpoint a ...

Vehicle tracking system A vehicle tracking system combines the installation of an electronic device in a vehicle, or fleet of vehicles, with purpose-designed computer software at ...

Voltmeter gauge Battery condition indicator The Voltmeter gauge or Battery condition indicator guide. While the ammeter indicates how rapidly electrical energy is flowing into or ...

Car Relay and Wiring Circuit Test Relays are used like a switch that utilizes an electrical trigger signal to activate. Once a relay is activated it will connect an electrical ...