Sccamper, here is a picture of the mount for a transom transducer to be mounted to a trolling motor. I put the wood wedge in to keep the cable from being pushed into the bottom of the trolling motor and getting broken. Next time I will just buy a trolling motor transducer, but the transom one comes in the box with the unit and I didn't want to take the time to send it in for a switch out.