1-12. ELECTRICAL SYSTEM (Con't).
b. MAJOR COMPONENTS AND THEIR FUNCTION.
Mounted on nose adapter at front of semitrailer. Regulates and
Voltage Control Unit
directs power flow from tractor to semitrailer lights. 12-volt and
24-volt electrical connectors are mounted on cover of unit.
Male connector for tractor 12-volt intervehicular plug.
Used to reduce incoming 24 V to 12 V.
Male connector for tractor 24-volt intervehicular plug.
Protect semitrailer circuits from too much current passing through.
Are a cycling or continuously self-resetting unit. Circuit breakers
CANNOT be reset manually.
Metal tubing protects individual wires, or groups of wires, from