Wire Code And Color; Fuses And Relays - JLG sky trak mmv Service Manual

Electrical System
10.5.6

Wire Code and Color

The chart below indicates the wire code abbreviation and
color as used on the electrical schematics.
Wire Code
BLK
BLU
BRN
DK BLU
DK GRN
GRN
GRY
LT BLU
LT GRN
ORN
PNK
PUR
RED
TAN
YEL
WHT
10.6

FUSES AND RELAYS

Fuses and relays help to protect the electrical system. In
general, a blown fuse is a symptom of another electrical
problem. Address the true problem, not just the symptom.
Simply replacing the fuse often will not solve the problem.
Blown fuses are usually due to simple causes, including
loose or corroded connections, or a defective relay.
There are two main causes of blown fuses; a shorted or
grounded wire in the applicable circuit, or a defective
electrical component. Visually check the condition of the
fuse, wires, connections and components in the involved
circuit before replacing a fuse. Check the circuit for
shorts, grounding, or defective electrical components.
Keep in mind that many parts in the electrical system
work with components of the hydraulic system; a careful
inspection of the related hydraulic components may help
in solving problems.
10.10
Color
Black
Blue
Brown
Dark Blue
Dark Green
Green
Grey
Light Blue
Light Green
Orange
Pink
Purple
Red
Tan
Yellow
White
For access to the fuse and relay panel, remove the three
self-drilling screws (1) (one screw is not visible in figure)
securing the lower dash cover (2) to the front dash (3).
Remove the lower dash cover (2).
3
2
1
The fuses (4) and sealed 12 volt relays (5) are mounted
under the lower left side of the operator's console. The
fuse and relay panels are part of the cab harness.
4
MT2050
5
OM10001
Model MMV Rev. 12-04