I have a 2006 Monaco Windsor with the Cummins 400 ISL. Under the dash is the 6 pin diagnostic connector. As is well documented on this site, no transmission data is revealed by VMSpc when the 6 pin port is used. If I understand these systems correctly, the transmission data is sent over the J1939 bus and the J1939 data lines are not present in the 6 pin diagnostic port. Inside the dash there appear to be other electronics that use the J1939 data lines - the Beede Instru-Link and the Aladdin J1939 Bridge. Can I simply tap the J1939 data +/- lines and supply these to pins 5 and 6 on the VMSpc module? Another possible solution may be in the foreward electrical bay driver's side foreward outside. There is a 9 pin diagnostic port labeled 'TRANS'. This would be a little more complicated routing from outside the coach to inside. On this coach the 12v power is constantly on at the 6 pin port and switched at the 9 pin port. Can the 12v power to pin 7 of the VMSpc be derived from any convenient switched source instead of coming from the diagnostic port? What is the purpose of pin 8 (Headlight Switch) on the VMSpc? Thanks, Doug