miwei wrote:
no battery, someone stole the one the previous owner had installed.
what size battery would he need to buy?
now he's saying it may be the power supply that connects the Trailer to the pwerpole is this something that he could swap out himself? or does a professional need to do it?
Sounds like some kind of jury rigged system. Normal hook up would not include any kind of external power supply. Without seeing it, it's hard to say whether he could replace it himself, or, what it is supposed to be doing.
Is that "power supply" doing what the converter is supposed to be doing?
Is that "power supply" plugged into a GFCI outlet? Is the outlet tripped?
Could you post a picture of it? Maybe tell us (from a label on the supply) what the input and output voltages are?
The battery, depending on size and shape of it's storage location, would be a group 24, 27, or 31 DEEP CYCLE marine/RV, 12 volt battery. If he installs a new battery, make sure it gets connected propperly (ie: positive/negative wires on the correct battery posts). Hooking it up backwards will blow some fuses.