Quote Originally Posted by Chuck Adams View Post
Independent battery to electronics and keep those wires as far away from trolling motor wiring as possible.
Just my opinion for sure!!
Chuck



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This can also create problems. Unless the negative of the battery is referenced to the hull ground aka TM ground, you have an isolated power or floating power condition. This isolation is subject to stray rf.

IF you have a MK trolling motor with built in transducer, there is a ground wire via cable that connects to the head unit via the transducer connector. This small wire ties the isolated battery to the tm battery in this configuration. Expect noise.