Has anyone played around with the new multiplex system yet? Accessed J1939? It's a nice setup. I finally bought a Palm to do diagnostics but didn't get any software yet. I did build myself a 9-pin adapter though. Bluebird is supposed to send me software for updating the speedometer algorythms and programming. So far the newest versions have been great. The earlier software version 17 had some problems with fuel level calibration, but can be updated.