One of my very first projects when I re-entered the hobby in the Fall of 2021 was to restore, including rewiring, my 671. It works perfectly. Eighteen months later I've gained a lot of experience in restoring and rewiring postwar Lionel stuff, and I think my work now is pretty good. Since it's so stinking hot in Houston right now, I'm staying inside for most of the afternoon. I have a clear workbench right now so I pulled out the 671. While it's functional, the rewiring is definitely a C- for many reasons. I looked into more authentic wires for that unit and found them on wire-plex.com. I recall that some of the original wires had different colored cloth wrapping. I looked into that, and the only picture I could find was this one here. The link to the entire thread that picture is in is here.
Does anyone have a better picture, or diagram, showing the colors of the wire wrap on the 671? I know it doesn't matter, but I would like to restore it as close to the original as I can.