oh boy this isnt fun or easy.. I called support and they didnt help at all ...
so went back to it ..ok here is some progress..
GX2200 yellow to Helix Green
GX2200 blue to helix white
GX2200 green to helix ground
GX2200 on 4800b
Helix NMEA output off
after some tinkering I think.. put the GX2200 in demo mode so it shoots AIS data?
after a lot of hit and miss and powering things on and off I see the accessory AIS menu, but its stability is horrible. sometimes its there some times its not I have no idea how to make it consistent (connections soldered)
if anyone at humminbird is listening this whole process needs a overhaul IMO
so My assumption is when your setting this up in your garage with out AIS data flowing live it wont work, and to add to the fun it seems to need to be flowing when the helix powers on? otherwise it wont find it later? I have no idea as the documentation for this stuff is written horribly.
some notes the GX2200 only seems to work when I have the NMEA set to 4800 and the helix head unit is set to NMEA output off.
I have the AIS menu sometimes, but I show nothing on the screen and there is no tracking list of ships (mind you im only in demo mode) real Pain in the ass to have to go to a busy water way to try and configure and set this up..
looking for any help still as its not working stable or reliably yet.