STOPLIGHT(S) DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) -725550461

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 12 vdc (7 pin) cable from

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 repair (Para 4-31 or replace 12

(b) If 10 to 14 vdc are present, 12 vdc

cable is OK.

(6) Release brake pedal.

(7) Turn OFF ENGINE switch.

(8) Connect 12 vdc cable to connector

MC16.