Ok I have a Helix 10 Mega SI G2N that i use JUST for High Speed 2D sonar and my lake Maps, I also have a Helix 10 Mega SI+ G4N that I use ONLY for my DI & SI the problem is I'm getting interference between the 2 units because the Helix G4N is using the factory Transducer which has BOTH 2D sonar and the Si & Di. I'm using the Xnt9-20T for the G2N unit for high speed, if i cut off sonar on the G4N it stops the DI & SI also is there anyway the just stop the 2D sonar on my G4N Unit? I even thought about getting an wiring diagram of the connector and breaking a pin off of the transducer cable for the 2D part to stop it from working but didnt know if that would screw up anything on DI & SI? Any help is appreciated! Thanks