Yes, I will either find a replacement transducer or remove the old Datamarine stuff. I was keeping it as back-up to new instruments I have installed. It is not an O-ring plug type install. It is a threaded plug with a flange. I suppose water could be getting through following the threads but I sealed them well. If it were threads the water would be collecting elsewhere. It seems to be coming from the wire that exits the transducer. I have never heard of this before.