Wow. Thank you very much for the useful information. I just wish it was about an hour earlier, lol. I removed one of the rear running lights on the trailer, found and pulled out the splices. I confirmed that the camera prep was a different wire than those lights (the camera prep was yellow/white, and the lights were brown/white. I opened the DC fuse box, checked all fuses, even pulled the fuse box out of the wall looking for a mis-wire or non connected wires. The yellow/white there was for the A/C's, not related. After no success there, I cut and capped the camera prep feed, cut into the running lights, and spliced the Furrion cable into that. After doing all of that, I finally have the blue light on the camera. Thinking I am now finished, I go to turn on the monitor at the truck, and it won't turn on.......I have truck running, other 12VDC chargers work, but nothing at all on the Furrion monitor. It has to be unrelated, right? They have no physical connection. I think it went bad, I'm going to have to return it and get another one.
Anyway, I'm a bit peeved with Heartland, because I called them yesterday, spoke to Dustin, who was stumped. Had no idea where the camera prep cable went to. So, what do you guys recommend I do now, add the fuse and switch it back, or just leave it on the running lights circuit? Looks like I just spent 3 hours chasing my tail......