Hello from Olsburg, Kansas, I am currently working on a 76 24' Argosy. I am looking for a readable 12 volt wiring schematic. Previous owner/s ripped things out, threw things away, etc. Luckily, the bathroom in rear was intact. I have put in a new larger breaker box for 110 volts and now working on 12 volt system. I still have top/middle celing open and lower side panels are off. End caps are temporatily in place. I connected what I believe are all of the 12 volt wires to the Univolt that is working but humming like they do. It is putting out power when I checked it in my garage. I connected the battery to it and checked the twelve volt lines around the trailer and no power. I have yet to check the grounded frame connection to the Univolt. I did download some schematics for 76 AS but it I am unable to read the colors since the original photo is low pixel.