Echo chirp 93vs Interference!!

[Carolina_Rig]

Just installed one on my trolling motor and it has severe interference while trolling! I have a older motorguide tour edition 36v. Ive tried grounding every which way and fixing to drop motor off at shop to get it inspected and to shunt the ground. Hope this works...lots of money not to be able to use correctly!! Has anyone else had success clearing interfernce??

Just to vent a little Garmin has the worst customer service I've ever dealt with!! They said why do I have to have the transducer on the trolling motor anyhow?!?!

Any help or advice would be greatly appreciated!

Thanks

I had interference from my trolling motor. attached picture shows a couple bumps on the motor before I addressed it. I drilled a thru hole in the skeg of my maxxum and installed a #10 screw with a washer/lock nut on the back. The hole was small enough so that it was an interference fit, or self tapping so that I had good bite into the skeg. I ran a 16-gauge wire from there to the ground block up under to bow where the TM is wired up to the battery wires.
For me this cleared up all the interference. also, I kept the ground wire and fishfinder wires opposite each other as much as possible going back up the trolling motor. Along with the Raymarine, I also have a garmin up front with no interference. Hope this helps.