Each motor is 12 volts 1/10 HP at 12 amps.
and the third is a manual control mode with an Xbee to cell phone control.
Update:I'm not sure if anyone has done this before, but there are five wires leading from the wheelchair joystick into the voltage controller for the motors. Five pesky wires.I don't need a motorshield because the controller handles all that voltage for me. But what about these wires? I know I need to hack them, but I don't know which does what.
you need a H-bridge thats up to dealing with 12A.