TM 9-4120-378-14
4.28 UNIT WIRING HARNESS. - Continued
Remarks
Action
Location/Item
Test
a. Test for continuity on wiring harnesses.
b. Touch the test probes of a continuity tester or
multimeter set on low-resistance range to ends of
wire and/or corresponding pin of connector.
c. If continuity is not indicated, repair or replace
wire or damaged connector.
Repair
a. Remove the insulation to expose 1/2 inch/1.27
centimeters of bare wire on each side of break or
damaged insulation.
b. Insert the ends into a splice-connector; splice
and crimp the connector to make firm electrical
contact.
c. Alternatively, heat-shrink tubing may be slipped
over one end of the wire before splicing, then
heated after the splice is made and soldered, so
as to cover the spliced area.
d. Be sure that no bare wire is exposed after the
splice is complete.
e. Replace broken terminal lugs with exact dupli-
cates.
f. To replace electrical plugs or connectors, tag and
unsolder wires from the solder-wells of the in-
serts.
g. Insert bare ends of the wires in corresponding
holes of new insert and solder in place.
h. Check continuity terminal-to-terminal.
a. Transfer tags from old cable to new cable.
Installat ion
Use Wiring Diagram (Appen-
b. Connect all connectors (1) and terminal lugs (2)
dix F).
and remove tags.
See paragraph 4.17.
c. Install rear top cover.
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