Yamaha DTXpress/DTXplorer/DTXtreme

Hi! i just got a DXT "brain" and hooked it up to my new pads. But i 
find the Hihat is stuck "open" with my old hihat "switch". I realize 
that i am going to have to buy (or make) a variable Hihat pedal to 
take advantage of the variable HH function ( way-cool.. SLOSHY 
HIHATS!)

but its gonna be weeks or months until i can get one here in MOSCOW ( 
Russia) since the yamaha dealer is out of stock on all the yamaha 
pedals.. and i dont think there is a pintech dealer here!

SO.. i was wondering does anybody know the "pinout" for the Yamaha 
hihat control input? Its some sort of Control voltage across three 
wires, right?

I would like to be able to at least jury-rig a cable so that I can 
switch from open to closed with a footswitch... if anyone knows how 
to do this i would greatly appreciate it! Or even if i can just lock 
the hihats "closed" it would be useful for the moment ( rather than 
editing all the kits)

Speaking of editing, is there a good software editor/librarian for 
the DTX? (I have the original model)

Thanks in Advance!