I cracked the code - the camera uses +12v and then splits that to power the film motor and uses the other +12v and +24v to run the automatic iris for cameras that have it. There are 2 basic colors - Brown and Black for +12v/Ground for the non-Automatic cameras through the trigger. There is a Yellow which bypasses the trigger, but I'm not using it. The camera is powered using a V-mount battery, but Gold will also do, and I put a standard 4 Pin XLR on it. I'll post pics soon.