I have never taken the batteries out of my 2010 trailer. They seem to still be in good shape but since I won't be traveling during these virus times I will take them out and just put them on a maintainer till I need them again. So that brings me to my questions:
1) Can I still just hook up to the truck and still have lights and brakes just with the 12v
electrical cord from the truck?
2) Do I need to separate the battery connections inside the trailer so the pos. and neg do not touch when the trailer is just hooked to the truck.
The reason for my questions are that I may need to get the trailer inspected and will need to tow it to the inspection station and I'd like to tow with no batteries in it. The inspection will not happen anytime soon and the batteries will already be on the bench and not in the trailer.