I recently added the NMEA 2000 buss to my HDS8 and added the LCG4000 external antenna. Haven't had a chance to test it out good yet though, but it works good in the house.

I am gonna order this cable and start using the INFO page on my HDS8. Yamaha had the NMEA interface connector on the engine block, so I just gotta get the cable and run it.

I do like this feature and you can display your engine info on the Lowrance info page on the HDS....

Lowrance 120-37 NMEA 2000 Yamaha Engine Interface | Blue Heron Marine Electronics

Waiting for warmer weather. Just ordering stuff to do.......