[chewychevy67]

I was trying to figure out how to possibly activate my gear vendors without using all of the electronics they give. Well I may have found a solution. In 1972 gm used this speedometer setup to control emmisions. It would activate a solenoid at a certain speed and shut it at another speed. That's how I would like to activate the unit. The allen key screws can adjust the speeds when it completes the circuit. I am also adding an original 3 standard transmission od pull handle that will activate a switch so I can shut it off completely if I want to. I am not adding anything to make it so I can split shift. In this truck that would be useless for me.