jr, with the price of copper nowadays you'll spend more doing it yourself than the repro harness would cost - believe me, I had to wire my bus from scratch and it is not cheap if you're going to do a good job of 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