The Hirose HR10-7P-4P connectors are kind of a pain to work with. If I were you, I'd grab a set of 4-pin XLRs (male and female), cut the included AC power cord and put it back together with the XLRs. Then you can use the cable as a Hirose <> XLR4 adapter. I've been meaning to do this myself just to have the ability to 'hot swap' camcorder batteries on the 722 by running from an external 12v source temporarily. Seems like an ideal thing to have come summer.
- Jason