I'm sorry your board relied upon the physical connections - removal of power was intended, removal of ground was a mistake. As the people making the harnesses are car audio specialists, they didn't see anything wrong with this funny 9-way connector which didn't have a ground on it :(

The only good point is that a 9w M-F lead can easily supply the power to the sony interface as well as ground. I'm sure you'll have no problems selling the units even with the extra wires, though - as I remember, we were going to link your site from the empeg one when you were ready?

Hugo