JDB Loc: GA

Advice on trolling motor transducer interference? Whenever I work the trolling motor the 2D sonar doesn’t register a return.

Able Man Loc: North Coast (Cleveland, Ohio)

Have you got both running off the same battery? ... If you do, try and see what it acts like with a dedicated battery, strictly for the trolling motor.

Jeremy Loc: America

YUP.

You need to add an isolator.

It will only make the 12vdc Trolling Motor isolated battery charge when it is activated. Some are activated by the Main Engine Voltage.

You could also just have switch between the two batteries so you can manually activate the parallel MODE.

There are Marine Battery switches that will do the same thing for under 50 BUX.

You just have fish finder connected to one battery and the Trolling Motor on the other battery.

The Marine Battery Switch has 1 2 or ALL. = Battery 1 Battery 2 ALL= Parallel.

You can have one 120 VAC battery charger for each battery so it will be isolated. With two separate 12 VDC isolated circuits. The Marine Battery Switch is really for saving a battery for starting if you run Trolling Motor Battery Voltage down low. You switch the Marine Battery Switch to ALL and then is same as a Jump because your making one battery bank. Whenever main GAS motor is running ALL will charge all batteries. So then you can run trolling motor again after voltage is maintained at 13.8-14.4 VDC. 20 Minutes will usually bring voltage up but 8 hours overnight is best.

Ben Bragg Loc: Dayton Ohio

What Jeremy said.
I just went they this last summer.
The wiring to the TM needs to be run separately from all other wiring
I had to add a choke to the transducer cable and adjusted gain on Deptfinder . Now I’m clear display

JDB Loc: GA

Dang good info y’all. Thanks for responding.