TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM 9-2350-311 -20-1 SECTION Ill. POWERPLANT AND HULL WIRING HARNESSES This section provides instructions for removal and installation of powerplant and hull wiring harnesses. Instructions for test, disassembly, and assembly of individual wiring harnesses are in Chapters 2 and 3. 8-41 CIRCUIT ID AND ILLUSTRATION OF WIRING HARNESSES (M109A2M109A3) NOTE • Each electrical cable is marked with a wire-numbered metal tag attached to the junction of the terminal of the cable. All electrical circuits shown in schematics and wiring diagrams are identified by wire numbers listed in each area. • See task sheets in this section, Appendix 1, and specific troubleshooting pages for detailed routing of wiring harnesses. See paragraph 2-13 for electrical repair kit data. LEGEND 1 Wiring harness 12268102— Alternator-to- rectifier 2 Wire 82— From master relay to wire 82/49 3 Wire 27B — From wiring harness 12268100 to voltage regulator 4 Wire 2 — From voltage regulator to wire 81 5 Lead 11593784 or 12260266 — From bulkhead connector to slave start receptacle (wire 49) and to circuit breaker panel (wire 10) 6 Wiring harness 10925829— From accessory control box to air cleaner blower assembly 7 Wiring harness 10925829— From accessory control box to heater fuel pump and personnel heater 8 Lead 11593784 or 12260266 — From circuit breaker to: 9 Slip ring segment board (47) 10 Telephone terminal (21 and 22) 11 Accessory control box (37 and 38) 12 Wiring harness 12260298— From driver’s compartment/connector to portable instrument panel 13 Wire 7— Battery to ground 14 Wiring harness 12260287— Bulkhead connector to driver's compartment connector bracket 15 Wiring harness 11594268— Bulkhead connector to driver's instrument panel 16 Wire 68— Battery positive-to-negative connectors 17 Wire 81 — From batteries to master relay 18 Wiring harness 11593806— Rectifier-to-voltage regulator 19 Wire 82/49— Engine starter from lower powerplant connector bracket to bulkhead connector 20 Wiring harness 12268100— Engine instrumentation bulkhead connector-to-powerplant connector bracket 21 Ground wire — Powerplant to hull 22 Wiring harness 12268102— From bulkhead connector to engine instrumentation 23 Wire 82— From bulkhead connector to engine starter 24 Wiring harness 10921380— To headlight assemblies 25 Wire 452— Bilge pump relay to bilge pump 26 Wire 29-31 — To fuel level transmitters Wires 76 — To fuel tank fuel pumps 27 Wire 352A and 352B — From wiring harness 12268102 to aeration detector 8-100