Well, I've tried taking a meter to the pins and
haven't come to anything conclusive. The pins
aren't numbered. They don't go direct to ground
(neg on the battery) so they must go through some
processing chip. Not sure how to map them to
the 9 pins of the RS-232. Two pins read -3 and
+3 with the battery connected but that doesn't
get me too far. Anyone else tried wiring the
pins in various combinations? I'm guessing since
they have an 8 pin connector that they are actually
using the flow control pins, or else they would
have gone with a smaller and simpler connector.