+ - K1 K2 Motor 12V System F1 F2 AC 120/240V Acc Motor K3 Ign Fan A/C Heat K4 Timer 120/144V 12V + Chassis Shunt LED1 + - Relay1 Heater Charger 120/144V DC/DC Converter Controller (A/C, power steering) 144V configuration: 8 batteries in center 4 batteries in front 120V configuration: 8 batteries in center 6 batteries in front 6 batteries in rear Fuel Door