Western Star Bodybuilder Book: Revision 3.2a 1A Electrical Harness Information P. 1A-5 b T.o.C. Front Wall / Sleeper Chassis Main Cab Overhead EOF Lighting Chassis Optional Harness Mod 30J Mod 287 Main Cab Harness Mod 320 Frontwall Harness Mod 321 Engine Harness Mod 286 Axle Wiring Mod 87S Aft Chassis Harness Mod 28A Main Chassis Harness Mod 288 Hood Harness Mod 28C 4700 Legacy Shown Models: 4700L Models: 4700L