Definition: A switch that automatically opens and/or closes a circuit.

Related Resources:

Electrical Troubleshooting: Part 1
What tools you'll need to have and how to do it successfully.

Electrical Troubleshooting: Part 2
What tools you'll need to have and how to do it successfully.

DIY: Replacing Your Battery
A battery can last four to five years with proper care, although battery failure can occur in as little as three years in very cold or hot climates

The Charging System - Part 1: The Battery
A look at the charging system, the parts and how they work.

The Charging System - Part 2: The Alternator
A look at the charging system, the parts and how they work.

Power Shortage
Will the cars of the future have all the electrical power they need to operate efficiently?