you can get harnesses from a number of suppliers designed for your year with the necessary changes for modern columns and V8s with alternator, saves re-inventing if you can afford it
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics