I really can't help you in your search but you might check the yahoo CC forum. Lots of good help there. You can also look at led lighting for power savings. I have no idea what size bulbs are in the rope lighting but the ceiling fixtures are 10 watt g4 bulbs. They pull almost 1 amp each. In my galley area, one switch lights 10 bulbs so if I'm running on batteries I try to watch what lights I have switched on.
Once you get your coach, add the model, year and build number to your signature. You can often find someone who has a coach within two or three build numbers of yours.
2000 40' magna #5892
Pete - Full Timing
2000 Country Coach Magna 40', CAT C10, #5892
2006 Jeep Liberty