I just ordered a new 12V Terrova 55 with ipilot link and HB 859 HD DI to put on the bow of my boat. I am going to use the same wires and 60 amp circuit breaker that is on my boat. Question is, can I splice into the same trolling motor wires to get my 12V for the fish finder and run a inline 3-5 amp fuse for it? Will there be any interference/noise from the troller if I do it that way?

Next question. My new motor has the us2 transducer and I read that it was compatible with the 859. Does the us2 transducer have the DI built into it or will it only be 2D sonar?