Air Throttle and Cruise Control

[luvrbus]

I think the guy you are referring to for the Rostra cruise control was Pete Papas in FL. I don't know if he still does as he sold his RTS a long time ago.

Those things Papas sold were cheap but didn't last long

[chessie4905]

Here is the current unit which is available not requiring a vacuum source.
They work fine and last a long time, except in Arizona along with Harbor Freight stuff.
I've used both types and have had great success with them. One was installed on a Burghman maxi scooter, which required some shoe horning to get the particulars out of sight. That unit used a vacuum source. I installed an electronic version on my Suzuki Vitara tow car, and it works great also. They have been used on Honda Gold Wings also. The kits come with a couple kinds of brackets and attachment options. The control box has several dip switches to adjust for various applications. The particular control you decide to use to operate it is optional and there is a few different types available.
You will need to provide a 12 volt source to operate it, just like King cruise. I installed the King cruise on mine as I removed it before I sold the 4104, however would have used a Rostra unit without hesitation otherwise. The Rostra units have been around for quite a few years,btw.

https://www.amazon.com/Rostra-250-1223-Universal-Electronic-Control/dp/B007ZCQD9S

[luvrbus]

It's whatever flips your switch,I have never owed a Rostra I just replaced the units I have never replaced a King yet only a cable on 1 (my own)