GM Chevy Mid-Size Cars 1964-1988 Repair Guide

Circuit Breakers

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One device used to protect electrical components from burning out due to excessive current is a circuit breaker. Circuit breakers open and close the flow path for the electricity rapidly in order to protect the circuit if current is excessive. A circuit breaker is used on components which are more likely to draw excessive current such as the breaker found in the light switch that protects the headlight circuit. A separate 30 amp breaker mounted on the firewall protects the power window, seat, and power top circuits, as applicable.

 
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