Left-Side Body Wiring; Front Wiring; Instrument Panel Wiring - GMC 1976 ZEO 6083 Maintenance Manual

Figure 26-Front Wiring (Roof)
NOTE :
Never replace a wire with one of a
smaller size . Fusible links in the wiring are four
gauge sizes smaller than the wire it is designed
to protect.
Fusible links are marked on the insulation with
wire gauge size because of the heavy insulation
which makes the link appear a heavier gauge than it
actually is .
Each harness and wire must be held securely in
place by clips or other holding devices to prevent
chafing or wearing away the insulation due to vibra-
tion .
By referring to the wiring diagram, circuits may
Figure 27-Door Jamb Switch Wiring
CHASSIS ELECTRICAL 12- 1 9
be tested for continuity or shorts with a conventional
test lamp or voltmeter.
LEFT-SIDE BODY WIRING
Wiring for rear lighting, fuel tanks and rear
speakers passes through a (10) way multiple connec-
tor located in the front L.H . corner of the instrument
panel . Rear lighting circuits can be checked for con-
tinuity through the female portion of this connector.
Figure 24 shows the (10) way multiple connector and
the appropriate wire position in the connector body .
Refer to the vehicle wiring diagram for wire size and
code used in the rear end wiring .
FRONT WIRING
Dome lights, headlamps and front clearance
lights are fed through an (8) way multiple connector
located under the instrument panel. The front light
ing wiring is part of the instrument panel wiring
harness. Figure 25 shows the female portion of the
front lighting harness and the appropriate wire posi-
tion in the connector body .
Front wiring for front clearance, indentification,
dome lamps and front speakers is shown in Figure
26 . Door jamb switch wiring is found on the right
hand side of the vehicle and is shown in Figure 27 .
INSTRUMENT PANEL WIRING
Wiring to the instrument panel is made through
multiple terminal connectors at the tell-tale panel,
DOOR JAMB SWITCH WIRING
A-4200