Here we can see a top view of the electronic controller of the wheelchairThis picture shows were wires can be plugged in, based on the other side of this controller, it looks like these are outputs to the motor of some sort.These are the various inputs that the electronic controller receives from the joystick controllerThis is a better picture of the input wiring that is permanently connected to the controllerThis is the picture that the manual provides for the MKIV Quad Pulse controller, you can see the three inputs that match up with the actual pictures