KathyAnn,
On another thread addressing security I suggested a small solar light that I found at Harbor Freight on sale. I mounted 3 of these * to my trailer. One of the best modifications to date.
*
https://www.harborfreight.com/lawn-g...ack-56252.html
These lights need no batteries and go dim when the motion detector sensor is not activated (a good courtesy to neighbors in a campground). These lights might make a great addition to your security plans.
As for power to the camera, maybe roof mount it (to the roof/wall intersection for set screw grip into frame material) and use Enternabond tape around the camera base and to cover the cord that might be able to parallel a pipe or other roof fixture (vent, antenna, AC) for access to power. We have some folks on here that would know better than I do and could verify if my suggestion would work.
Good luck,
RMc