No lights or ceiling fan

[dodonne2]

I just bought a 1977 20ft Argosy. When I plugged it in right when I got it I had power to everything, lights, fridge, AC, fans. After a few days I lost all inside lights and the two ceiling fans. The AC unit works fine as do all the plug ins and the fridge. The only thing that stopped working were the lights and the two small fans. I have checked all fuses and they are working. I didnt have a battery plugged in with it for the first few days. Since the issue happened I went and bought a battery but that didnt fix anything. What could this be? Do I need a new converter?

Thanks,

Derek

[drboyd]

If you're plugged in, and with a new (presumably charged) battery, but none of the 12V stuff works, one of the main battery fuses or the converter may be the culprit.

[fluxcap]

Time to break out your voltmeter and trace the power and check the grounds.

[Trnpk Crsr]

I see where you checked the fuses on the hot side. I also think that there is large fuse on the 12 volt ground side. If that fuse is blown, you still won't get a complete circuit even if the fuses on the hot side are testing ok.