This driver board allows you to control a 'Drive-By-Wire' electronic throttle with the e1280s ECU.   Uses 2 auxilliary outputs off the e1280s ECU, & boosts the current as required. You MUST use this driver board to run Drive-By-Wire with the e1280s ECU.   The e420c ECU cannot run Drive-By-Wire.   Comes with plug and terminals which you will need to crimp yourself.