Legend for Figure 1
1. ROW LETTER - A
2. COLUMN NUMBER - 30
3. WIRE HARNESS NAME - SIDE CONSOLE
4. WIRE HARNESS NAME - FRAME
5. WIRE CONTINUATION LOCATION- [20, E]
6. MEGA FUSE - 100 AMP
7. WIRE NUMBER AND COLOR - 761-F-WHITE
8. RELAY - STARTER
9. SHEET NAME - ENGINE
10. SPLICE - S761A
11. DIODE BLOCK
12. CONNECTOR - CPS07
13. CONNECTOR - CRP07
14. FUSE - 5 AMP
15. HARNESS DIVIDING LINE
Wires with the same number are interconnected
through splices and connectors, and therefore have
the same electrical function.
When a circuit is spliced into several wires, or
when a wire passes a connector, then each wire
number receives the next unique suffix letter. An
example is 42-a, 42-b.
To simplify the schematic, sometimes the identifi-
cation has been omitted for a spliced function. It
may concern an intersection between a switch and
a splice, or a right-hand component operating si-
multaneously with a left hand component.
There is a wire number overview in the Diagrams
SRM. In this overview each wire is listed with the
wire harness it is part of, and with the connector
identification number and pin numbers it connects
to. The actual location of a connector code can be
looked up in Connector Overview.
Electrical Wire Colors
In addition to the function ID numbers on the elec-
trical wires, different wire isolation colors are used
to identify the circuit levels. See Table 4.
Wire Harnesses
Wires are bound together in wire harnesses to se-
cure against the adverse effects of vibration, abra-
sion and moisture. The description of wire har-
nesses follows from its location in the truck or from
the functions it connects with.
Table 5 provides an overview of the different har-
nesses that belong to the different truck options.
Figure 10 through Figure 16 show a 3D-view of
most of the wire harnesses with their terminals
and connectors. The legends for these figures men-
tion the connector codes and connector description
for verification. See also Wire Harness Identifica-
tion and Connector Location.
Table 4. Electrical Wire Colors
Wire Color
Circuit Level
Red
Battery Level Power
Circuits
Black
Heavy Current Grounds
Green
Signal Grounds
Pink
12 Volt
Orange
5 Volt Supply
White
Other Circuits
Yellow (Twisted Pair)
CAN Hi
Green (Twisted Pair)
CAN Lo
2200 SRM 1592
Electrical Schematic and System Description
5
