ELECTRIC MOTOR: Describes the device which changes electrical energy into rotational motion. Originally the only electric motors found in private cars were the starter and windshield wiper motors although modern vehicles include many small motors driving such items as the electric windows, sunroofs, mirrors. seat adjustment and central locking.

BRUSH HOLDER: Describes the device which keeps the carbon brushes in an electric motor in contact with the commutator or slip ring.

BRUSH SPRING: Describes the spring which pushes against the back end of a carbon brush in an electric motor to force it against the commutator or slip ring.

COIL: Describes a pulse-type transformer used to increase voltage in order to fire spark plugs.

COIL CHIMNEY: Describes the top of the ignition coil where the high-tension leads are attached.

COIL IGNITION: Describes the standard ignition system which uses an ignition coil which stores the power from the battery and steps it up.

COIL LEAD: Describes the high-tension wire going from the coil to the distributor.

COIL WIRE: Describes the high-tension wire running from the coil to the distributor or spark plug.

COLD CRANKING ABILITY: Describes a measurement in amps of a battery's ability to start a vehicle under cold temperatures. Basic automobile batteries begin around 400 cold-cranking amps while the best batteries are around 1000 cold-cranking amps.

COLD-CRANKING RATING: Describes the minimum number of amperes a fully charged 12-volt battery can deliver for 30 seconds at 0° F without falling below 7.2 battery volts.

COLD PLUG: Describes a type of spark plug which has a short insulator nose which absorbs less heat and dissipates heat quickly.

COMPOUND MOTOR: Describes a direct current electric motor with two separate field windings, one in parallel and the other in series with the armature circuit; used as a starter motor.

GENERATOR: Describes a mechanism that generates power.