TCM FB-8 Series, Service Manual

Page: 245 / 259

6. ELECTRIC WIRING
The electric components of the truck are wired using several types of wire harnesses and color
coded by circuit (wire number).
The wire harnesses are connected with connectors (2 types) or screws.
Table 6.1
Color symbols and examples
Example: Wire number 22, Yellow coating
with a blue marking
B Black R Red
Example: Wire number 110, White number
110, White coating without marking
G Green W White
L Blue Y Yellow
O Orange Lg Light green
P Pink Sb Light blue
Table 6.2
Connector symbol
Connecting type Plug-in side Receptacle side Remarks
Plug-in type
Housing
The numbers signify wire numbers.
The alphabetic letters mean colors.
(Table 6.1)
Plug
Screw type
Two wires may have different wire numbers even though they have the same wire color. Before
trying to check the wires, refer to wire harness and circuit diagrams on pages that follow.
The dotted lines in the circuit diagrams are given for optional equipment.
Wire
number
Y L 22
Wire
number
W 110
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6. ELECTRIC WIRING