Greg,
My only comment with the adapter is that the OBD II conector is not held into the housing very firmly and you really have to be careful when you pull it out of a car that has not had a connector hooked up to it before. I yanked on mine once and pulled the connector out of the housing, broke two wires and had to do some re- soldering.
Called myself an idiot for that one- was doin the ex-wifes car and was in a hurry to go
What I did was put a bead of 5 minute epoxy around the OBD II end, basically cemented it to the housing, and wrapped two layers of shrink wrap around the serial cable.
Solid as a rock now and works like a hot damn.
Not *****in', just would hate to see someone else do the same thing