The Mercruiser steering angle sensor is wired to work with the smartcraft plug on my boat but it would not communicate using via the gateway to my Garmin 943xsv so I cut the plug off and wired it directly to the GRA10 to communicate via nmea 2000. This would be a great path for boats that are...
That is a latching solenoid, to test it apply and remove voltage to the silver studs and you should hear it click. If it clicks then check for continuity on the copper studs to see if it is open or closed then apply and remove voltage to the silver studs again if it clicks again then check to...
There is no part number listed on the parts manual for the knob itself but it’s an easily sourced part. Search for knob, male and you will see what you need.
I installed a new transducer when upgrading to a Garmin setup the factory unit came right out and was in bad need of re bedding. No modifications needed as the new one fit perfectly in the existing 2” hole.