I have to agree with Ed here. I just replaced all the marker and tail light pigtails to get rid of the asbestos covered wires. They were fraying, and unsafe. My splices were the same in my 53 FC, so your pictures are a familiar sight to me. I am using all new 100v wiring, new outlets, and shallow outlet boxes from Vintage Trailer Supply. All of my lights are being converted to 12 v though, and I am covering all my 12v
wiring with black cable protector found at home depot.