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TM10-3930-660-20
8-46.
CAB WIRING HARNESSES - TEST/REPAIR/REPLACE (Cont’d)
b. If possible, connect ohmmeter
leads to ends of wire.
c. Disconnect suspected wire and an
adjacent wire. At one end of the
wires, connect the two wire
terminals together.
At the other
end of the wires, connect ohmmeter
leads to terminals of these two
wires. An infinite resistance
reading indicates a broken wire.
REPAIR
If 30 percent or more of the wires in
wiring harness have been repaired or
replaced, replace complete harness.
1.
REPLACE ANY BROKEN TERMINAL RINGS
CONNECTORS.
2.
REPLACE ANY BROKEN WIRES.
a.
b.
c.
d.
e.
f.
Note both connection points of
broken wire. Disconnect broken
wire at both ends.
Cut exposed wire and terminals
from both ends of broken wire.
a
OR
Cut replacement wire to required
length and install proper
terminals.
Route replacement wire along
wiring harness, securing wire
with tie wraps or electrical
tape.
Connect replacement wire to
original connection points.
Test circuit function.
8-132
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