ELECTRICAL
4181384 First Edition 4-49
4
Work Lights Circuit—Theory of Operation
When the key switch is turned to the run position, voltage
is available to work lights switch through 10-amp fuse F3.
When the work lights switch is placed in the on, position
current flows from the switch to the work lights, turning on
the lights.
Work Lights Circuit Schematic
See Figure 4-27.
Figure 4-27
Wht
Blk
S1
Key
Switch
G1
Battery
Off
Heat
Run
Wht
Start
30
AC
19
50
Brn
Brn
Brn
+
-
Unswitched Power Circuit Switched Power CircuitGround Circuit
Work Lights Circuit
Blk
Blk
Blk Blk
Blk
Blk
Blk
(1)
(3)
(7)
(8)
(2)
(2)
Blk
Grn/Wht
On
Blu/Wht
Blu/Wht
Blu/Wht Blu/Wht
Blu/
Wht
Blu/
Wht
Off
S10
E1
X2
Wht
Grn/
Wht
F3
10A
Fuse
Work
Lights
Switch
Work
Light
E2
Work
Light
TN1146