TM 9-2330-285-14&P/TO 36A11-21-10-1
COMPONENT TESTING - CONTINUED
ACTION
REMARKS
ITEM
LOCATION
TESTING HARNESSES
NOTE
This is a typical test procedure for a wiring harness. Refer
to troubleshooting (page 4-12) and wiring schematics (pages
FO-1 and FO-2) to properly use these harness test procedures.
Step 3 is a continuity check. Use the following charts to
identify each individual wire in the harness.
Commercial (12-Volt) Wiring
CONNECTS TO
CIRCUIT
TERMINAL
DESIGNATION
NUMBER
I
#1
Ground
C-1
Left directional
#3
C-3
Stoplights
#4
C-4
#5
Right directional
C-5
#6
Taillights
C-6
Military (24-Volt) Wiring
CONNECTS TO
TERMINAL
CIRCUIT
NUMBER
DESIGNATION
Left blackout
24-484
A
taillight
Left stop and
B
22-461
directional light
Right blackout
24-483
C
taillight
Ground
D
90
Service taillight
E
21-489
Blackout stoplight
F
23
Right stop and
22-460
J
directional light
a. Attach one lead of the multi meter to each
3 Wiring harness
Harness terminals
common terminal (1) and (2).
(1) and (2)
If the needle does not move for every
wire, the harness is bad.
b. Repeat (a) while bending and twisting the
harness.
If the needle fluctuates for any
wire, the harness is bad.