I think one of the C-plugs on the SP relay box wasn't on right. Or far enough down. Other then redoing the thermal watt converter, and removing and a bit of testing, then replacing the SP relay box, have you unhooked or done something? Panel lights might be burned out. Got to test and or inspect them. But they are not important. If the pumps are running, but the day tank is not filling up, we can fix that. You need to first pull out the filters in the bottom of the B2 and B3. Check that they are clean. Put an old rag under the pumps first. I case there is fuel in them, and in case you drop the parts. Then you need to check all the lines from the set tank, to the pumps. You may also need to add 5 Gal fuel. You man not have enough in the set tank.