Repairing Bus Wiring
NOTE:
Following procedure must be used to ensure proper repair is performed on bus wiring. Bus wiring is sensitive to moisture and oxidation and must be properly sealed to ensure proper operation of the module communications network. Regular heat shrink tubing is NOT sufficient. Heat shrink tubing containing hot melt wax is required.
- When performing repairs on bus wiring, ensure wires on bus are twisted at a rate of 33-40 winds per 3.3 ft. (1 m). The twists should start within approximately 4.9" (124.0 mm) from any harness connector. Use only 20 AWG standard wire gauge for repairs.
- If performing a splice, strip .75" (19.0 mm) of insulation from one wire and 1.50" (38.1 mm) of insulation from the other wire. Perform STEP 1 in illustration. See Fig 1. Place Raychem SCT® or equivalent hot melt wax type heat shrink tubing over one wire.
- Twist stripped portion of wires together. Solder connection using resin core mildly activated (RMA) solder. Bend wires to allow installation of heat shrink tubing. Perform STEP 2 in illustration. See Fig 1.
- Position heat shrink tubing over splice area. Using heat gun, evenly heat the heat shrink tubing until wax flows from both ends of heat shrink tubing.
CAUTION:
DO NOT use acid core solder.