Connector Identification
Each connector is identified by the letter code of the
connector type and a unique identification number,
e.g. CRP07.
Connectors have the same identification number if
they interconnect between two wire harnesses, e.g.
CRP07 interconnects with CPS07.
On the schematic a connector may be represented
complete with all wires it normally contains, or
partial, showing the few wires that are relevant for
the particular page of the schematic.
A completely represented connector shows two
rounded corners, as shown on Figure 1, item 11.
A partially represented connector has one curled
corner, as shown on Figure 1, item 12.
As the wires in a connector will relate to different
functions, portions of a connector can be divided
over several schematic pages according the differ-
ent electrical function of the wires. In general there
is no relation between a connector and a schematic
location. The only possibility to look up a schematic
location is through the connector listing.
A connector is not shown on the schematic if the
connector is an integral part of a component or if it
does not have a minimum length of wire harness
between the component and the connector. In these
cases the schematic just shows the wire harness
connector.
Connector Pin Numbers
On the schematic the pin numbers are indicated by
a number or letter inside the connector symbol,
with the relevant wire ending at the relevant pin
number.
On the connector itself pin numbers are shown in
relief, but can be as small as 1 mm high. To read
the numbers, clean the housing and provide suffi-
cient lighting.
Pin numbers can be located on the inside of the con-
nector next to the pin, on the backside of the con-
nector next to the wires, or on the connector hous-
ing.
Connector Description
For orientation purposes each connector has been
provided with a description, which is shown in the
connector overview in Table 11, and in the legend
for the wire harnesses. The description matches the
component it is attached with.
For connectors between harnesses the description
is a combination of the two harness names. For in-
stance CPS139: Frame-Mast. The first part of the
description indicates the wire harness that the con-
nector is part of, the second part indicates the wire
harness that the connector connects with. An ex-
ception is the interconnection between frame and
side console harness, which is through three con-
nectors.
To avoid having three identical descriptions, the
descriptions Cab Signals, Cab Power and Aux Sig-
nals have been assigned.
2200 SRM 1944
Electrical Schematic and System Description
11
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