Well.. I ordered the replacement 12 volt
fuse panel online as well as an intellipower from Best Converters. Thanks to everyone for their help and suggestions thus far.
I am confident that the diagrams above and links posted will make it very simply for me to connect everything when I receive them.
I also received my 1978 printed manual from Airstream. (as a side note it is interesting to discover that Airstream seemed to have used the same manual for all models in 1978 and simply changed the cover and first page to personalize for each model).
I also ordered the CD with a PDF version of the 1978 model year user manual and Service Manual from ebay.
Of course the first thing I did was remove the password and other useless security from the CD so that I could use the file without restrictions, print out pages and not having to type in a password.
My problem however, is I still am having an issue finding out where this wire that was cut from the Control Panel leads to, so that I can pick up the other end. Even with the service and user manual.
I have attached 2 pictures to help clarify what I am facing. The first picture shows the cable coming out of the Right side of the Control Panel above the stove. The second picture shows the cut end of the cable (about 4' later).
This is probably the last major hurdle to overcome with the electrical before I tackle the water pump.