The truck is original, no wire harness though. I did a engine swap installed a 235. So not original anymore. I did buy a kit with a fuse panel. I’m thinking of returning it and buying a replacement ‘47 Alternator harness from classic parts or Jim Carters, they seem simpler to install. I plan to leave it mostly stock with the stomp starter and everything in the dash, but with 12volt and alternator. I have a GM 10si 3 wire alternator and 12 volt starter. What about using a 47 replacement harness and buying a separate fuse panel? Sorry for the dumb questions. The only thing I ever wired was a car stereo.