Join Date: Oct 2007
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First make sure all your fittings and connectors are clean and dry.
Then see if you can beg, borrow or steal a transducer that will work with your system if it works now buy a new transducer, if not then it would be a good chance that it is the wiring. Try running a new wire from your transducer to the dept sounder and see if you get a reading. If neither work call Garmin and see if they have any suggestions.