STOPLIGHT(S) DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) -725550295

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 24 vdc (12 terminal) cable

from connector MC15.

(2) Set multimeter select switch to volts dc.

(3) Connect positive (+) multimeter lead

to pin B on trailer end connector.

(4) Connect negative (--) multimeter lead

to pin D on trailer end connector.

(5) While assistant fully applies brake

pedal, observe multimeter

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

release brake pedal and

repair/replace 24 vdc cable.

(b) If 22 to 28 vdc are present,

24 vdc cable is OK.

(6) Release brake pedal.

(7) Connect 24 vdc cable to connector

MC15.