I posted a question under "will it work" thread. I got no responces for the first time in four years, as a member. I know that not many utilize the SB-9BL switch on their boats, but I thought someone might have some experience and could offer some input. I will pass along what Lowrance had to say in case someone else experiences the same problems. "Lowrance said the switch will work with DI" This stands to reason since it is a wire to wire connection, regardless of the difference in sonar technology.I may have had a transducer go bad or a bad switch,or poor connection. It works fine run straight to the back of the head unit. I hope this helps someone down the road if they experience similar problems.......crappie1133