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Summary: Wiring cars doesn't have to be difficult. Learn about electrical wiring in cars in this free video clip.
Robert has been a Alarm technician and owner for 10 years. read more
"I am doing this video for Expert Village. I am going to give you a brief overview of basic electrical wiring. Now in the lock position or zero position, the key does nothing. When the key is inserted into the ignition position, it turns. Accessory 1 turns on your accessories, accessory 2 turns on your auxiliary accessories, accessory 3 will crank the car. Once the car cranks and the ignition switch is released to the accessory 2 position, all the vehicle circuits stay on. Of course when installing any electronic device such as a radio, automotive security system, remote car starter, you must duplicate what the ignition switch does. So in order for the remote starter to start the vehicle or a radio to come on, it must duplicate accessory 1 and accessory 2. "
eHow Article: Automotive Wiring Tips