Shunt wound controllers for E-Z-Go TXT 48. Choose from 300A, 400A and 500A models. Native OEM connectors eliminate the need for adapter boards or cutting and jumping wires to install a controller. USB programming port. OEM style speed controller or Alltrax's "Go Fast" mode. Fan assembly allows for longer continuous power output for heavy duty applications. Universal mounting adapter (sold separately) bolts into OEM mounting holes for no fuss installation. Fuses are included with controllers. Proper current capacity solenoids required for use with Alltrax controllers, DO NOT use stock solenoids with Alltrax Controllers. All Solenoids require diodes and pre-charge resistors.