FRONT MARKER LIGHT(S) DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) -725550263

TM 9-2330-385-14

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical

circuits, a direct short may result. Damage to equipment, injury, or death to personnel may occur.

VOLTAGE TEST

(1) Disconnect wire 1012B at nonoperating

front marker light.

(2) Set multimeter select switch to

volts dc.

(3) Connect positive (+) multimeter lead to

wire 1012B.

(4) Connect negative (--) multimeter lead

to a known good ground.

(5) While assistant turns ON ENGINE

switch and turns on lights, observe

multimeter (TM 9-2320-364-10).

(a) If 22 to 28 vdc are not present,

perform Step (6) below and repair

wire 1012B (see schematic, Fig

FO-1.1) or replace trailer main wire

(b) If 22 to 28 vdc are present, wire

1012B is OK. Perform Steps (6) and

(7) below and go to Step 2 of this

Fault.

(6) Turn off lights and turn OFF ENGINE

switch.

(7) Connect wire 1012B to front

marker light connector.

4-118.3