Trolling motor interference

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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?

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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

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Originally Posted by checkerfred

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

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Especially true if the charger is a NOCO.

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.

Attachment 501006

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

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