Well had to get a new trolling motor because my Edge took a dump and was going to cost more to fix than it was worth. So was wanting Spot Lock to picked up a Terrova because it was in my price range.
Mounted the GT52 on it and sure enough my fear interference showed up. Spikes when I start and stop it although not continuous. Tried several things found on this site and others as well as you tube without correction. The only way to not get interference was to take off the transducer and have it on a pole I rigged up at least a 12-18" away from the TM. Called Minn Kota and they say probably the Garmin. So call Garmin and walked through some things to try again and see if it helps.
Ive tried disconnecting the charger, the TM has a ground already being built after 2017 per Minn Kota, grounding TM batteries to cranking battery, etc, etc. The wires for both TM and front unit are run on the starbord side of my Tracker so I havent tried running seperate wires on the other side but the Minn Kota rep thought that since I didnt have interference with the transducer off the TM that it would be any wiring. Im not up to speed on electrical stuff.
I am going to try a couple of things and 1 I seen on youtube is to get a thick piece of rubber 1/2" I think and wrap it with aluminum tape and see if that works like it did for the you tuber. I did throw my Hook 7 on there and had now interference what so ever.
If none of that works wondering how many of you put the transducer on a separate pole instead of mounting it on the TM? Feeling that is going to be my last option and hate to switch because I like the details of my 73sv. I know it would be a pain but I think it would be worth it.