Sealed beam Headlight Sealed beam headlamps were introduced in the United States in 1939, and became mandatory from the following year until the 1984 model year. Cars prior and su ...

How a spark plug works Car Spark Plug Split Diagram The main feature of a spark plug is a cerarmic Insulator inside a threaded metal shank Through the middle of the cerarmic body ...

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 i ...

Spot lights Police cars, emergency vehicles, and those competing in road rallies are sometimes equipped with an auxiliary lamp, sometimes called an alley light, in a swivel-mounte ...

Starter motor 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 to your ca ...

Car Tachometer (Rev Counter) explained A tachometer (revolution-counter, Tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a mo ...

Transponder car key The majority of keys to cars built after 1995 contain transponder chips. The purpose of a transponder chip is to disarm a vehicle immobiliser when the car key ...

Direct tyre pressure monitoring systems (TPMS) Direct TPMS, or direct tire pressure monitoring systems (direct sensor TPMS) refers to the use of a pressure sensor directly mounted ...

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 ...