You using the "hyundai" or the mitsu 1 connector cable?
Look on the side of the connector/adapter where it plugs into the port. If there's a round hole for a jumper cable there, I *think* you have to power that one up externally from the cigarrette lighter/battery with a jumper cable. /ubbthreads/images/graemlins/dunno.gif
I dunno, I got tired of snap on's sh*t when they fawked up the brick, so I haven't played with their new whiz bang toys very much.
I don't have five minutes to enter all the data when the mac system only takes five seconds, and graphs thru the head unit with no additional connections.
Mac pOwns snap on in the hand held diagnostics department.