I have a 3 wire 12v actuated electric shut off that I want to use GPS to activate at a set MPH, let's say when you reach 5mph sends a signal that opens the shut off and at 10mph it will close it. This is all new to me, I am using a toggle right now but I want to convert it to GPS so I never have to use the toggle switch. I would need to be able to adjust the MPH both on the open and close, or simply shut it off.

 

I would need to be able to adjust the MPH both on the open and close, or simply shut it off.

scottmoser56 if that's a question I say you already answered it with use of 5 mph hysteresis so what's the problem?

 

if this is a car there are ways to do this. One is through OBDII and another, that could be easier is devices that monitor the CAN bus.