4-12. UNIT TROUBLESHOOTING (continued).
MAIN FRAME WORKLIGHT DOES NOT OPERATE (MODEL A ONLY) (continued).
Electrical power must be shut off
be checked. Failure to comply
with this caution may result in dam-
age to test equipment or electrical
Tag and mark connector before re-
(1) Disconnect (9-pin) linking harness
connector from cab control box.
(2) Set multimeter to ohms position.
A reading of infinity indicates an
of wire, and check multimeter for
linking harness connector, position G,
and supply harness connector,
Any reading besides infinity indi-
cates a grounded wire.
of wire and connect to chassis