I have a 2006 188vs with a in hull transducer located by the bilge pump and then i have a thru hull located on the step and i don't know what it is. Need help in identifying the thru hull. It appears both were factory installed and the thru hull is connected to a nmea 2000 network system (the boat is set up for lowrance ) maybe a temp.sensor? Also is there a way to get the lowrance transducer switched over to humminbird?
And a final question, do they make a thru hull transducer for humminbird di and si. If so maybe i could remove the one sensor on the step ( if it is indeed a temp. sensor) and use the hole for a transducer.