Sounds like the Audiovox one uses vacuum?
The one sold by Dakota Digital does not.
I have a diesel and don't want to run a vacuum pump.
Yes I know about the throttle knob "cruse contorl" on the dash, but it's just not the same as the real thing. But my engine does have a governor, so I could just floor it and run aginst the governor at 95 mph and 3,200 rpm in high gear right?

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-