OK, A little background.
First, the mechanical governor on mine broke, I needed something to hold the engine speed steady.
I ran a garage at the time, and had a spare cruise control that was sent to me in error(wrong style for the car was working on).
I got to thinking about my welder problem and realized that a criuse control is just a programable governer.
The model of cruise control that I had was for a diesel pickup, the install for this model was to attach a sensor to the drive shaft that sensed engine speed for the computer in the cruise control.
This sensor I attached to the pulley on the front of the motor.
The rest of the install was as if I was hooking it up to the engine on a truck.
I followed the diagram for the truck install with the exception of mounting the control switch on the blinker stem, this I mounted on the stinger with the help of some telephone extension wire.
Not a bad set-up.
But, it doesen't bring up the engine speed when the electrode is touched to the work, like a 'real' hi-lo control works.
But for me It works just fine, I got a governor out of it, and I got hi-lo, which I never had before.