Hoff, they are everywhere, Ebay to almost all of the Vintage supply houses and all prices. Filling station is under $20 for what I bought as I just need a switch my new wiring harness had the wires and I can survive without "self canceling". You can spend up to $300 with wiring harness but I wouldn't. plan and buy wire by the foot off the spool. Even expensive setups use a hose clamp I was complaining about. Kevin, That vintage aftermarket one is what I remember but the clamp probably wasn't as universal in size as a hose clamp. Lol Back in the day, I remember my dads almost new AD had the upgrade one like yours but was self-canceling with a rubber wheel that ran on the back of the steering wheel.

Larry
Old man᠁Old truck᠁neither one goes very fast. All you need in life is TIME, PATIENCE and MONEY.
If you are missing one component, you'll need an abundance of the others two.