[mickmate]

You've figured out you need on, on, on for your three positions because of the park. The originals used the DR3 two speed motor with a pigtail of 6 wires coming out. The switch they used is a PRS7 which is still readily available. The problem with the PRS7's that are now available is they only have 3 or 4 contacts and the originals had 13 contacts. The contacts also need to be independent of each other as they make funny noises when high and low are hooked up at the same time. That makes a third speed (medium) that lets the smoke out.