don't recall if my 46 harness came from Carter, but their harnesses are good repro originals, as in exactly what you had originally, no additions unless you get them seperately, and original 46 harnesses didn't have fuse boxes or X number circuits, those are meant for the hot rodders power this and that extras
"best" depends on what you're doing, if you're just trying to have a driveable original truck, get original, the only electrical on the truck was the ignition, lighting and maybe a heater
Bill
