How to get a picture of wiring of a stairlift chair?

Hi Wire came off under the cover of a simplicity 930 stair lift chair made by handicare. Can not find out to put it back in. I would like to get a hold of a symatic if that is the word of the wiring of this unit. Have looked and called no one seems to be able to help.
HOPE you can help.!!!!!!

thanks
Kathy, March 2022