I'm a new RVr. I just bought a 2004 Allegro Bus and today I apparently accidentally set off the door alarm, I believe by opening the door before the remote had actually unlocked it. The horn began blowing, and didn't go off, even when I put the key in the ignition. After a few minutes the horn stopped, but from that point forward none of the 12 volt lights or water pumps worked. I checked all fuses and breakers that I could locate, and none of them were blown. I reset the mains, and even reset all the DC breakers. The inverter seems to be functioning fine, as I can get 120 volts when I switch it on. But still no 12 volt power anywhere. Any ideas anyone?