From the comments I've read in the past from Falcon owners the original manual did not have that level of detail. Have you seen: http://www.intervecphoenix.org
re: generator - Do you have two batteries - one for the engine and one for the coach? Is the coach battery dead? If you start the van engine first, leave it running, try starting the generator.
re: courtesy lights - Could be dead battery. Does your van have a converter/charger? Does it come on when you plug the van in? You might hear a hum etc. It should supply 12v to the coach.
Have you seen anything in the van that looks like a battery disconnect switch? It could be a manual switch or a solenoid type. Newer coaches have one and it is used to disconnect the coach battery when the van is not in use. If that was off then the coach interior lights wouldn't work.
I left a copy of this topic in the Owners Manual section of the forum but thought I also put your post here for more people to see.