Ground (earth)
Modern cars have a "negative earth" electrical system. In this case the negative terminal of the battery is bonded to the vehicle's chassis (the metallic body work) and the positive terminal provides the "live" wire to the various systems. However, some older cars were built with a "positive earth" electrical system, in this case the positive terminal of the battery is bonded to the chassis and the negative terminal for the live.
Read more about this topic: Electrical Polarity
Famous quotes containing the word ground:
“The sight of one of these frontier houses, built of these great logs, whose inhabitants have unflinchingly maintained their ground many summers and winters in the wilderness, reminds me of famous forts, like Ticonderoga or Crown Point, which have sustained memorable sieges.”
—Henry David Thoreau (1817–1862)