There should be a port on the back of your unit that is for the sonar transducer. You may need an adapter to hook the sonar plug up with the trolling motor. I did with my MK Fortrex. You may also need to go into your unit and select the source you want for sonar which would be "this unit". When on downscan or sidescan, you will be using the transducer on the back of the boat. When using sonar, you should still be able to select the glassed in transducer as well if you want to for some reason. I running Gen 1 units.



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