Thanks for the diaphragm, but if I am understanding this correctly, you will have to either put all these wires into individual plastic insulators or have a complete one from a 72 up wiring harness and just move all the wires? I think this would have been way over my customers head so I opted for the modified and rebuilt variable speed switch from Devinism for a little over $200 and it just plugged right into the customers new 70 harness..