Thread: Trolling motor interference

Originally Posted by Dbarrentine

I have Garmin 93 with a gt54 transducer that is on a Minn Kota Terrova trolling motor. Everytime i turn or change speeds on trolling motor I get bad interference on my garmin. They are on seperate batteries and I have a ferrite bead on the cable. I know I want get all of the interference out but what can I do to make it better?

My transducer is on the transom and I was getting terrible TM interference, even with separate batteries. I moved the wires to make sure nothing crossed the TM power wires and still had it. Someone on a Facebook group asked if I had a multibank charger attached. Sure enough I did. I disconnected the charger from my electronics battery and that fixed the issue. Might be worth checking if you have a multi-bank charger

I installed a “Choke” (the Humminbird one, even though mine is a Lowrance) and it stopped the interference for me at least. Installed it right at the battery where my trolling motor and electronics are powered from.



Heres the link to it: https://humminbird.johnsonoutdoors.c...e-interference

Cost is ~$25. Might be worth a try?? Good Luck!