ELECTRICAL SYSTEM KEY DESCRIPTION KEY DESCRIPTION 1 - REAR WIPER MOTOR 30 - STARTING MOTOR 2 - REAR WIPER SWITCH 31 - ENGINE HARNESS 3 - REAR WORK LIGHT [04G14] ELECTRICAL SYSTEM 9015 850 (Low Ground Pressure Bulldozer) Crawler Bulldozer PC1885 in BULLDOZER 850