Thanks Peter, your advice was sound - I found everything I needed - except a
supplier of the plug that connects the transducer to the Garmin Sounder
(6F-Airmar) - any idea who distributes these plugs? Tried Bias Boating
(Australia) but they say no body supplies these plugs?


"Peter Bennett" wrote in message
...
On Thu, 15 Jun 2006 10:54:16 GMT, "Mick"
wrote:

Looking for a wiring diagram to 1) try wiring up my existing in-hull
transducer to see if it will work instead of installing the transom
mounted
unit supplied and 2) wire into my autohelm auto pilot. Any suggestions
on
where I can source the diagrams?

Mick


Garmin's depth transducers are made by Airmar - I found transducer
wiring diagrams on the Airmar website.

The Garmin 238 manual should identify which wire is the NMEA-0183
output (probably blue, if it is like my 168). If your autopilot has
NMEA-0183 input, you connect the Garmin out to the pilot +in, and the
pilot -in to ground. If the pilot only has SeaTalk, you will need to
get an NMEA-SeaTalk interface from Raymarine.

See http://vancouver-webpages.com/peter/seaspray_nmea.pdf for the
NMEA-0183 wiring on my boat.
--
Peter Bennett VE7CEI
email: peterbb4 (at) interchange.ubc.ca
GPS and NMEA info and programs:
http://vancouver-webpages.com/peter/index.html
Newsgroup new user info: http://vancouver-webpages.com/nnq