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2-2. TROUBLESHOOTING ELECTRICAL MALFUNCTIONS | Up
/.25ton/TM-9-2320-289-34 CUCV Series Trucks at intermediate direct support and general support level Manual | Next
(3) Symbols. |
TM 9-2320-289-34
(2) Lead Descriptions. Each lead on a wiring diagram is designated according to wire
size, wire color, and circuit. For example, lead 3 RED-2J (SXL) is designated as follows:
Wire Color
(a)
(b)
(c)
3 RED-2J (SXL)
Wire Size
Circuit
identifier
Wire size is the diameter of the wire in millimeters. Use the following table
to convert wire size into wire gage:
Wire Sizse
Wire gage
.5 . . . . . . . . . . . . . . . . . . . . ...20
.8 . . . . . . . . . . . . . . . . . . . . . . . 18
1 . . . . . . . . . . . . . . . . . . .. 16
2 . . . . . . . . . . . . . . . . . . . . 14
3 . . . . . . . . . . . . . . . . . .
12
5 . . . . . . . . . . . . . . . 10
8 .. .... . . . . . . . . . . ..
8
1 3 . . . . . . . . . . . . . . . .
6
19 . . . . . . . . . . . . . . . . . . . . . . 4
32. . . . . . . . . . . . . . . . . . . . . . 2
Wire color is as previously described.
The circuit identifier is only found on the wiring diagram and is used to help
distinguish between leads of the same wire size and color. The following
abbreviations may appear as part of the circuit identifier (temperature in
parentheses is maximum temperature that the wire can withstand):
NOTE
• A fusible link is connected to a lead by a splice and is always
constructed of a wire 4 gages higher than the lead it connects to.
l Any wire that is not labeled will be poly-vinyl chloride wire.
HDT
Heavy-walled,
high-abrasion, poly-vinyl
chloride wire (175°F or 97°C)
HW
Heavy-walled, high-abrasion, Poly-vinyl
chloride wire (275°F or 152 ‘C)
SGT
Poly-vinyl chloride; negative battery cable
SGX
Cross-link polyethylene; positive battery
cable
SXL
Heavy-walled, high-abrasion, cross-link
polyethylene (275°F or 152°C)
THERMO HW
Fusible link; heavy-walled silicone over
cross-link polyethylene.
2-3
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