ELECTRICAL
673831-Rev A 4-37
4
Optional Work Lights Circuit—Theory of Operation
Unswitched Power Circuit
Unswitched power is available from the battery positive
terminal to the 3-way distribution block.
Unswitched power is available from the 3-way distribution
block to the following:
• 30-amp fuse (F3)
• 15-amp fuse (F4)
Unswitched power is available from 30-amp fuse (F3)
output terminal to the ignition relay (K1) terminal 30.
Unswitched power is available from 15-amp fuse (F4)
output terminal to the following components:
• Ignition switch terminal 6
• LDU Display terminal 1-01
Switched Power Circuit (Green)
When the key switch (SW1) is turned to the run position,
voltage is provided from key switch terminal 4 to ignition
relay (K1) terminal 86, energizing the relay and to MCU
(U1) terminal 1-02.
With the ignition relay (K1) energized, switched power is
provided from ignition relay terminal 87 to the following
components:
• Light switch (SW6) terminal 2
Work Light Circuit
When the light switch is placed in the on position, voltage
is provided to the three work lights, turning on the lights.