Edit: I think I figured it out. I wired up my own adapter after looking at a different diagram of how it all goes together.

http://www.rclipos.com/RCLimages/HP-...CAR02-Diag.gif

Loks like you got it figured out - if you have that same white block, it will plug into the charger itself where the balance adapter plugs in, or it will plug into the Hyperion adapter.

I DONT have the same white block, that was the problem. I only had the 3 pin orion style plug. BY looking at the diagram, I figured out what pins are for waht, and just hacked up the plug to fit the side of the charger. Works like a charm.