Don't use one now since I changed from a Motor Guide Tour to an Ultrex.
Their use is variable, no such thing as one size fits all.
You start with one pass-through on the transducer cable-test, do another pass-through-test, repeat. Do that until it works or you run out of room. If not fixed, you stack two of them and go through the procedure again. I had to use two stacked for my installation. Don't remember the number of pass-throughs I had to use.
Wayne Purdum
Charlottesville, Va.
Helix 12 CHIRP MEGA+ SI G3N/G4N, Helix 15 CHIRP MEGA SI+ GPS G4N
SOLIX 12 SI/G3, Helix 8 CHIRP MEGA SI+ G4N, Ultrex 80/LINK, MEGA360,
MEGA LIVE, LIVE TL
I'm new on this post, but I have been following the action steps outlined to correct the issues with the Mega 360, I have done almost the exact same thing as akowalc1 has tried. I am running a Helix 12 Mega Gn3 SI/DI Console, Helix Gn3 12 DI mega, on bow, units are connected to ethernet and unconnected to ethernet, I am having Wagon wheel effect, when the trolling motor turns, when motor runs, and on spot lock. I have the minn kota charger, single line wiring to each unit professionally installed. Plus the power steering motor on the ultrex has been replaced by HB. Still same issue with Wagon Wheel. Will keep trying and I will stay tuned.
well maybe worth a try and it worked for me , on the humminbird site I got this >>> CHARGE CHOKE FOR INTERFERENCE ​