need a motor to adjust a water valve

Ah - I couldn't find prices etc.... And I'm quoting AUD$ which although close enough to 1:1, many things like that are double the price here if not more. And I too was wondering about the control mechanism. I'd assume a simple up-down switch. But otherwise a commercial controller is worthwhile (unless you can program or build controllers with suitable lag & response....). But yeah - servos can be too small, quick, etc. Your first motor/pic looks fanfntastic - that's why I searched. (Cables are a pain in the R's - especially with mechanisms that are so last millennium! Even manual electrical control is worthwhile - merely buttons etc with electric wires to the target - simple! It's like comparing electric gauges to mechanical ones - yech!!)

The later controls I have (that I'd love to use....keep it factory-esque so to look stock) uses a water valve under the hood - the one I pictured is actually under the dash. The later ones are under the hood and then use vacuum doors to direct the heat. I would hope I could use a vacuum power valve and then tie it into the later style controls. Another PITA is that most manuals dont show or go near climate controls - I guess thats for the shops...so finding just a general "schematic" of the vacuum lines has been rough.