Copied from a post at BBC ...
A HDS Gen 3, HDS Carbon, HDS Gen 2 Touch, HDS Gen 2, and Elite-7/9/12TI's can use the Motor Guide XI-5. The only additional part would be a NMEA 2000 Network and the MotorGuide gateway. If you don't already have one NMEA starter kit is part number 124-69.
NMEA Layout: Article Details
Rickie