Just picked up our new Eagle and after searching for the antenna power supply for about 1 hour (manuals had no location identified), I pulled the tv out (on a wall mount arm) and sure enough the power supply was tucked behind the boob tube.
I guess I was lucky. It only took me about 20 min. to find it in my camper. I think Jayco likes Easter Egg hunts.
It took 3 days to find the slideout controllers.
Also finding the back up camera wire behind the middle running light after removing the light only took about an hour. Almost gave up that it was there. But it was!