Thanks V8volvo for your detailed reply.
Yes that is my Pinzgauer rebuild..... I'II post a few detailed pics if it doesn't break Forum rules. It was a 10 year project....Mind you my previous air-cooled petrol Pinzgauer took 13 years, so I'm getting faster
Some years ago I missed out on purchasing a cruise control drum/spindle unit, and considered machining my own, but emphasis on getting the vehicle finished took priority.
I'm happy to machine, build, fabricate etc but my electronics knowledge is minimal (fortunately I have a friend who is an Electronics Engineer) but I don't want to "redesign the wheel" so to speak on a cruise control system for a D24, so information like you provided is great.
As soon as I thoroughly digest all the info I'm sure I'II have some questions if you don't mind.