Scotty, I have a 2006 HR Endeavor that I purchased a few months ago. The original owner said there was no keyless entry system but I found key fobs in the coach but they didn't work.
I found the TriMark control unit behind the center console area and tried programming the fobs. There doesn't seem to be any power to the control unit. I am thinking maybe a fuse is blown.
In the documentation I have there is no fuse mentioned for the keyless entry system.
In your replacement did you find a fuse anywhere for the system anywhere.
Thanks