I completed this conversion today.
I my case I ordered the inlet and a right angle power cord. Not the conversion kit.
Others have had issue with the mouse hole opening being too large even for the adapter that comes in the conversion kit. Anticipating that problem I went to Lowe's and just searched for something I could make my own adapter. What I found was a plastic disk that was intended to be placed on drywall to stop a door knob from putting a hole in the dry wall. It happened to be EXACTLY the diameter of the mouse hole piece. I drilled a 2 3/4 inch hole in it, mounted the inlet and screwed it to the trailer using the existing hole.
BTW, my siding is not the smooth fiberglass material. It is the wavy aluminum siding.
Hope this helps with those trying to find an adapter.
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.