Well, everything seemed to work with the two rear brown wires plugged into the DC panel, and only the stuff I wired up myself worked with them disconnected. However, with everything going, and my converter on "boost" mode, the AC ground wire from the panel to the refrigerator
melted, and started a fire!
Luckily I was right there to put it out. I have to replace a few other damaged wires as well as the melted one. I checked the AC, and everything was hooked up properly. The refrigerator
was not functioning, but the breaker was on, and I noticed after the fire that its power knob was not quite off. However, I don't think a slightly tweaked frig knob is supposed to cause a fire.
My two hypotheses right now are:
a) it had something to do with the two brown wires. Perhaps they are ground wires, and hooking them up to the DC panel caused some kind of complicated grounding problem.
b) it has something to do with grounding the converter chassis. There is a warning in the manual about not grounding it with the same wire as the "-" out wire. The "-" wire goes to a grounding block with all the other major grounds, then to the frame, via a huge green wire. I hooked the converter chassis ground to one of the huge floor bolts that goes into the frame. It seems like I followed their instructions, but the refrigerator
ground wire still melted.
I guess I will make some calls on Monday to Gary at Bigfoot
and Progressive Dynamics.