Hummer H1 (2006+). Manual - part 334
12-12
Electrical System
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Wiring Repair
Wiring harness and wires - All wires are of a specific insulation color indicated on the wiring diagrams. Insulation color helps to
identify circuits and make correct connections. Insulation colors and their abbreviations are as follows:
Wire repair is very important for the continued, reliable operation of the vehicle. This repair must be done as described in the fol-
lowing procedure:
Single Wire Repair (Exposed)
1.
Remove the damaged area, removing as little wire as possible (Figure 12-8).
NOTE: Care should be exercised in stripping the wire insulation to avoid cutting wire conductor strands.
2.
Strip the wire ends to the appropriate length required by the splice clip (Figure 12-9).
NOTE: Heat shrink tubing is available in various diameters. Typically the heat shrink tubing will shrink to approximately one-half
of its original diameter, therefore the tubing diameter selected for the repair should not be greater than twice the wire insulation di-
ameter to ensure a proper seal.
3.
Slide heat shrink the tubing over one of the wire ends (Figure 12-10).
NOTE: Splice clips are available for different wire gauge sizes. Therefore, it is important to select the appropriate size for the wire
gauge being repaired.
4.
Slide both ends of the wire into the splice clip and crimp the splice clip to the wire ends (Figure 12-11).
5.
Pull the wires, by hand, in the opposite directions to test the crimp of the splice clip.
6.
Center heat shrink the tubing over the splice clip (Figure 12-12).
7.
Using a heat gun or equivalent heat source, apply heat to the heat shrink tubing until the tubing conforms to the splice clip and
the wire insulation (Figure 12-13).
8.
After the splice cools, apply two layers of vinyl adhesive electrical tape to complete the repair (Figure 12-14).
Single Wire Repair (In a Harness)
1.
Remove the harness covering in the affected area (Figure 12-15).
2.
Repair the damaged wire using the exposed single wire repair procedures. (Go to Step 1.)
3.
After completing the wire repair, apply two layers of vinyl adhesive electrical tape over the affected area to complete the repair
(Figure 12-16).
Multiple Wire Repair (In a Harness)
NOTE: Since more than one splice is required in this case, stagger the wire splices such that they are no closer than 3 in. (7.6 cm)
from each other.
Repair the affected wires using the single wire repair (in a harness) procedures.
BK - Black
PK - Pink
BR - Brown
PP - Purple
DB - Dark Blue
RD - Red
DG - Dark Green
GY - Gray
TN - Tan
LB - Light Blue
WH - White
LG - Light Green
YL - Yellow
OR - Orange