Well, my encoder is not wanting to come apart, but I have found a supply of pictures that work.
ACgtx20 Motor Encoder Repair
I am hoping to be getting the full schematics soon and the Encoder has all grey wires so I have no idea what they do. I got the low down today on how the Solectria controllers function, being MOSFET based makes it quite interesting. It's mainly because the Solectria systems are 144 volts, not really high voltage, but they only used 200 volt fets and bust when the regen activates and the battery pack is full, then ringing pushes the voltage over 230 volts and pop goes the FETs. The newer DMOC controllers has solved that issue.