STOPLIGHT(S) DO NOT OPERATE. (Cont) -725550395

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.

CONTINUITY TEST

(1) Disconnect wire 1003/22-30 at

stoplight connector.

(2) Set multimeter select switch to ohms.

(3) Is continuity measured between center

contact of stoplight socket

and connector?

(a) If there is no continuity,

replace composite light

(b) If there is continuity, composite

light is OK.

(4) Connect wire 1003/22-30 to

connector.

(5) Install lamp in stoplight socket.

(6) Install preformed packing and

composite light cover, and tighten six

captive screws.

VOLTAGE TEST

(1) Disconnect 12 vdc (7 pin) cable from

front junction box connector MC16.

(2) Set multimeter select switch to

volts dc.

(3) Connect positive (+) multimeter lead

to pin C on trailer end connector.

(4) Connect negative (- ) multimeter lead

to pin A on trailer end of

connector.

(5) While assistant turns ON ENGINE

switch and fully applies brake pedal,

observe multimeter

(TM 9-2320-364-10).

(a) If 10 to 14 vdc are not present,

perform Steps (6) and (7) below,

and replace 12 vdc cable.

(b) If 10 to 12 vdc are present, 12 vdc

cable assembly is OK.

(6) Release brake pedal.

(7) Turn OFF ENGINE switch.

(8) Connect 12 vdc cable to front junction

box connector MC16.