If you haven't found the manual(s)that you are looking for, you might try www.autobooksbishko.com. These folks specialize in 1970s vintage manuals for Dodge motorhomes. If what you really want is intended to be used for repairing or maintaining the automotive portion of the RV, you need to ask them for a chassis manual. I have a 32' 1979 Holiday Rambler Imperial 5000 that is on a Dodge M-600 chassis. Power is supplied by the 440-3 engine with the gearing provided by the A-727 Loadflite automatic transmission. I purchased a chassis manual from them (about $60.00) and it is worth every penny I spent. The wiring diagrams alone are worth the price if you have to get into the automotive wiring. The one thing I haven't found anywhere, is a wiring diagram for the coach itself. Bishko's web-site has been redone, but it used to indicate that they also had some "Owner Manuals" that would possibly cover some of the third party components installed in the interior. If you would rather talk to someone instead of going to the web-site, the number is 1-800-544-3312.