Originally Posted by WaltP
Your description leaves some room for various interpretations, but you say the fan runs on DC power. DC power from where? If from an onboard battery that means you must have a converter of some kind which runs off shore power to keep the battery charged and nothing more is needed. If not then did your PO remove all that?
Not uncommon on the older trailers to have a converter fail and the OP remove & run everything 12V straight off the battery or some older trailers never came with a converter to start with. They simple had everything running off the battery and the owner needs to use a generator
or separate battery charger to fill it back up when they have access to power. Not an overly convenient system in my way of thinking but a lot of the older boler
owners for example seem to make it work for them.
Some here have pulled out their convertors and replaced them with nothing more than an on board battery charger for when they are plugged in - which leaves everything running off 12v even when plugged in. Some supplement it with a solar
charger for when not plugged in. That is a pretty simple system that works if everything you have in the trailer will run off 12v and you never want/need to use any 110 appliances etc in the trailer