Western Star Bodybuilder Book: Revision 3.2a 1A Electrical Harness Information P. 1A-4 b Engine and ABS T.o.C. Front Wall/ Sleeper Main Chassis MAIN CAB HARNESS Harness MODULE 320 EOF LIGHTING MOD 294 AXLE WIRING INTERLOCK MOD 87B AXLE TEMP MOD 865 DIFF LOCK MOD 87A FRONTWALL HARNESS MOD 321 ENGINE HARNESS MODULE 286 / 283 MAIN CHASSIS HARNESS MOD 288 LIGHTING EXT. LIGHTS MOD 318 / 31J BEACON POWER WIRING LIGHTS Power Net Distribution MOD 327 ALTERNATOR BATTERY Box (PNDB) CABLES FORWARD ROUTINGS MOD 291 CHASSIS & MOD 125 SIGNAL POWER JUMPSTART 312 / 314 / 315 WIRING MOD 295 MOD 29A BATT CAB POWER SHUTOFF 4900 Shown MOD 926 MOD 293 Models: 4800/4900/6900 Models: 4800/4900/6900