Reading some of your previous posts I would agree with the others sounds like a gnd. problem. Gnd. wires can be found fasten to many locations on your chassie frame. Up front there may be a long bolt with gnd wires on it supplying gnd for fuse panels,engine computer,cruise control,lighting ckts,etc,etc. Your generator may have a gnd wire locally attach to the frame with a bolt an nut. There will be another gnd for your converter, where ever that is, to the frame. So you can see we have gnd's all around.
What I would do, an have done on all my MH's, is look for a bolt with usually several white wires attached to it. I have found loose nuts on bolts allowing you to move the dirty wire connections around.
Take the wires off clean them up apply elect. silicon grease to wire connections an reconnect. Look for the gnd near your Gen. an do the samething. All locations I have discribed. Hate to tell you this we are not done.
Next its a good idea
to check your battery cable connections to both coach an motor terminals,clean these also, you will see the good results of your efforts.
---"007"