I have an Onan Emeral Plus 4kw RV generator with less than 120 hours on it that works perfect and has all the wiring FROM the generator to connect to power outlets. No gas tank mounted of course, but it could easily be installed in a trailer. I planned on installing it in my horse trailer, but there really isn't a convenient place to mount it due to the layout of the trailer. Anyway, I'm asking $2650, and it cost over $3500 new. It's a 2001 model. I can send a pic if your interested.