4-57. INTERVEHICULAR TRAILER HARNESSES - TEST/REPLACE.
This Task Covers:
Tool Kit, General Mechanic's: Automotive (Appendix B, Section III, Item 1).
Multimeter (Appendix B, Section II, Item 2).
Locknuts (Appendix H, Section II, Item 11).
Unit shut down and cool.
Test. (Refer to Figure 4-57).
With multimeter, perform continuity test. Placing one multimeter probe on each pin of Intervehicular harness, touching
corresponding pin on other end of harness with other multimeter probe. If discontinuity is indicated, or if wires have
become unsoldered or insulation is cracked or deteriorated, replace intervehicular harness.
Remove two pan head, machine screws (1), two washers (2), two cushioned cable clamps (3) and two locknuts
(4) from trailer frame (5). Discard two locknuts.
Remove two cushioned cable clamps (3) from 12v (6) and 24v (7) intervehicular harness.
Position 12v (6) and 24v (7) intervehicular harness on trailer frame (5).
Slip two cushioned cable clamps (3) onto intervehicular harnesses.
Align two cushioned cable clamps (3) up with holes in trailer frame (5). Install two pan head, machine screws (1)
and two washers (2) into holes in trailer frame (5). Secure using two new locknuts (4).