handye9 wrote:
Does the trailer have a battery on board?
If it does, that would be the most likely suspect.
Assuming there is a battery involved: Then have the battery load tested. (If you're new at this, label the battery cables to be sure they go back in the right place, and note the + positive / - negative positions on the battery)
While the battery is out, turn on shore power and check lighting.
Note: There are a few older converters that require a battery being installed, in order to power the lights. If your's is one of them, you'll need to wait until you have a known good battery.
thank you for your reply.
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?