GM Blazer/Jimmy/Typhoon/Bravada 1983-1993 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 rapidly open and close the flow path for the electricity, 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 a breaker often found in the light switch that protects the headlight circuit. Circuit breakers may be found at various locations of the vehicle including on or in the protected component, on a firewall bracket, in the convenience center and/or in the fuse block.

 
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