Control System20Service Manual – Scrubtec R 253 - RA40Wiring DiagramIGNITION KEY (SW1)FCI DUFLEX (2.54 pitch) 6-way, male pinsFCI DUFLEX (2.54 pitch) 9-way, male pinsDashboard power supply +Enabling inputDashboard serial +Dashboard serial -Dashboard power supply -Electronic board power supply +Electronic board power supply -Key electronic board power supply +Return from USER keyExternal power supplies -Display electronic board power supply +Enabling input from display electronic boardDisplay electronic board serial +Display electronic board serial -Return from steering microswitchMicroprocessorDASHBOARDELECTRONICBOARD (EB4)FUNCTION BOARD (EB1)SIGNAL CIRCUITFUSE (F2)DISPLAY BOARD (EB2)J3J2J1.5J1.1J1.2J1.3 (+5V)J1.4J1.5J1.6J1.7J1.8J1.9J1.12B+B -J1.4J1.3J1.2J1.1J4.1J4.2J4.3J4.4Enabling from battery chargerPower supply from battery chargerBattery charger enabling power supplyBattery charger data communicationBATTERY CHARGER (CH)ANTI-SKIDCONTROLSENSOR (SW4) (SEE THE STEERING SYSTEM CHAPTER)Key reader power supply circuitKey IdentificationFigure 1https://harrissupplyind.com - To Order Parts Call 608-268-8080
