interfacing Garmin 128 and Autohelm 800

[joss]

I have an oldish Autohelm 800 tiller whatsit and a Garmin 128 GPS which I
would like to join together so that the Autohelm can steer to a waypoint.
From the respective instruction manuals, I have established that they will
talk the same language (NMEA 0180,82,83), so all that remains is to join
them together. The Autohelm has a four-pin socket but I am not sure if this
goes straight to the GPS or if I need an add-on Autohelm interface (Radio
Navigation Interface) that is described in the instruction book. If any body
can help on this it would be appreciated.

thanks,
Jo

 

[steve_cronin]

In the days when i had that setup it was necessary to have the interface with the older AH800's. I'm not sure if they still list it as a current accessory.

Steve Cronin

 

[joss]

thanks for replying. What was the interface called? I'd like to try and find one.