Well - what I did is just use the connectors from my original lights and did a bit of electrical work (doesn't take a rock scientist) Negative to negative, positive to positve - a bit of wire stripping - etc.
SO - I now have Bohmen 6000K ligts connected to my Hella Balasts, and extra set of Bohmen balasts, and the bottom connector parts from the lights themselfs.
The only concern I had about them is that thoguh the 6000K lights that are now are OK - they actaully seem to have LESS light output than the one side 7500K that did work, while I had it in.
And don't worry - I didn't just get the HIds for the hell of it - I got them for safety - they are a heck of a lot brighter, and there's no way I'd ever go back. And they are aimed perfectly. No glare, nada.
The Bohmen balasts I have are just the starndard ones they have. I was loking for like $199 for the both of them , shipping included.
I'm still a bit concerned with the output on the bulbs I have in there now