I reviewed the manual for the 3000 watt 12 model. I see it is a sophisticated system. The manual describes the remote generator start in terms I am not familiar with. The manual does not show a circuit diagram for the remote gen start.
Did you install this system in your TT? You may want a trained technician to help you with this installation or you could call either Onan or Aims for instructions. If you make certain mistakes when hooking this up, you could destroy some expensive electronics.
I don't feel qualified to advise on this.
Dutchman Kodiak Cub KD176RD 2018
Nissan Pathfinder 2015