It looks like you have your hands full. The good thing with these machines is that they all have the same basic operating principles. The wiring is not as bad as you may thing. On most of these you can wire it just about any way you want to and the only ill effect is that the motor will turn backwards, and the media in the bowl will go in a counter clockwise rotation. In your style bowl it appears that you need it to run in a clockwise rotation so the media will go up the ramp and over the screen deck. Which ever way ends up being the correct way of the motor running to get the media to run the right way you just want to make sure that the weights are positioned correctly. Remember BLT. This means that Bottom leads Top. In other words the bottom weight should be ahead of the top weight in directionality.
No matter what type of media that you put in the bowl, just make sure that you have the bowl filled up to about 4 inches from the top. If you dont you will not get the results you are looking for. Speaking of that, what are you trying to do to the parts? Just deburr the edges?
Any other questions that you may have please let me know.