Re: Questions RE: Installing Interior 12v LED Light Strips
On the ones that I have, you can see the resistors (little rectangles with numbers). I'd post a picture, but I don't have enough posts yet (google "sparkfun 10260", it's the first result). I suspect yours have something similar. If so you don't need to add resistors.
I don't know anything about conditioners, but my intuition is that power coming from the battery bank should be pretty clean. It might be different if you were running straight from the generating source. Perhaps someone who knows what they're talking about can bring some actual information on the subject though.