Problems with trolling motor!

I have been having trouble running my ipilot features together such as autopilot and cruise. If the speed gets over #3 my autopilot gets to spinning in circles. I think its a low voltage thing and plan on checking the volltage at batteries and trolling motor plug. The battery is brand new and passed load tests. I am thinking I have a connection problem. Was wanting any suggestions!

I would check what you said first. Funky voltage makes electronics do strange things. If was just a plain TM it would just run slower, but when you get GPS and other sophisticated stuff involved it will play tricks on you.
SeaRay

Check your battery in the remote too. My terrova does strange things in autopilot mode when my ipilot remote battery gets low.