I picked up an old electric wheelchair this past winter. The motors work and I have two good gel batteries that take & hold a charge. Up until today, the joystick even worked but it just stopped working and is flashing an error code. I don't know what it is because I have no manual or other paperwork. I wanted to replace the joystick anyway with some sort of R/C controlled switches but I don't know enough about the circuitry in the joystick part. The controller box on the chair has all the PWM circuitry (I assume) so, I'm thinking all I have to do is send the correct signals to it to make the motors do what I want. Can someone tell me if this is correct, so far? And then, how can I figure out switches to control the controller? The joystick is of the inductive type. Can anyone out there get me headed in the right direction? Thanks