I went ahead and ordered the 20 to 120 psi switch from summit.
Maybe I should connect that to the 12 volt input wire, and then keep my two switches hooked up to the ground wires. Then get the switch adjusted so that it powers up both the overdrive and lock up at about 40 to 45 mph. Then keep my switches off and until I am ready to activate them. At least that would drop them out if I have to make a quick stop, or if I forget to. Thanks for all the help!