ALL TRAILER LIGHTS DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) -725550333

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 24 vdc cable from

connector MC15.

(2) Set multimeter select switch to

ohms.

(3) Is continuity measured between

24 vdc cable, pins D and L, and a

known good ground?

(a) If there is no continuity, repair

24 vdc cable (Para 4-31)

or replace 24 vdc cable

(b) If there is continuity, repair wire

1435 (see schematic, Fig FO-1.1)

or replace trailer main wire

(4) Connect 24 vdc cable to connector

MC-15.