It all works fine now, after resetting the GFI in the trailer, and then a day later realizing the GFI in the garage (same circuit the trailer is plugged in to) had also popped, and resetting that one. Not sure what caused what, but haven't had any issues in a couple days, and my Dad is still sleeping in the trailer. He thinks it's so comfortable he never moved into the guest room in the house!!
Hillary & Jeff
Camping with the sighthound variety pack