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.
(1) Remove rear junction box cover.
(2) Set multimeter select switch to ohms.
(3) Is continuity measured between rear
junction box, terminal wire
1435 and a known good ground?
(a) If there is no continuity, repair wire
1435 (see schematic,
Fig FO-1.1) or replace trailer main
wire harness (Para 4-30.1).
(b) If there is continuity wire 1435
(4) Install rear junction box cover.