Motor controller schematic/code

Gents, I'm trying to put together a treadmill motor and controller, each from a different manufacturer. Does anyone have a schematic and/or code for controlling a 141877 motor control unit?

AC input and DC output are labeled conspicuously. There are 3 tabs labeled L, W and H and a two pin SIP connector labeled TWO WIRE. At least one of those tabs has to be an interlock, another ground and I'm guessing the third is just an ON discrete. I'm assuming the TWO WIRE connector is the serial input that would normally come from the head unit that I would think is just a PWM signal.

There is another two pin SIP labeled TEST but I'm not worried about that connector just yet.

Any help would be appreciated.