TM 5-4320-300-144-44. TRAILER WIRING HARNESS (CONT)Location/ItemActionRemarks2.Ground lugDetach ground lug from frame assembly.3. TrailerCarefully disconnect intervehicle connectorwiringfrom trailer wiring harness. Slide trailer wiringharnessout of grommets.REPAIR4.TrailerInspect trailer wiring harness for broken orwiringburned insulation, frayed wires, and loose orharnessbroken connectors. If insulation is damaged,remove damaged section and inspect the in-dividual wires. Replace any damaged wires.Replace damaged or loose connectors. Installreplacement wires and retape trailer wiringharness with several layers of MIL-T-50886insulating tape.5.Grommets Check for brittleness. Replace brittle or dam-aged grommets.6.IntervehicleInspect for broken or burned insulation, frayedconnectorwires, and loose or broken contacts. Inspect formissing or broken contact pins. If insulation isdamaged, remove damaged section and inspectindividual wires. Remove any damaged wires.Replace damaged or loose connectors. Installreplacement wires and retape intervehicle con-nector wires with several layers of MIL-T-50886insulating tape. If contacts are missing or broken,disconnect connector from wires; install newconnector.INSTALLATION7. Trailer wiringAfter repair or replacement, slide trailer wiringharnessharness through grommets. Reconnect trailerwiring harness and intervehicle connector. In-stall front clamp, mounting bolt, nut, andlockwasher with ground lug under lockwasher.Tighten securely. Install rear clamp, mountingbolt, lockwasher, and nut, and tighten securely.8.Taillights andReconnect taillight stoplights and blackoutblackoutstoplight at connectors. Check operation of alllightlights.4-183
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