Bob,
I don't this is a simple wiring deal. The OD lockout button is a dead simple setup. It's just a momentary make and break button like a door bell. The light is just a 12v light. I moved mine to a switch panel that I installed in place of the stock cup spiller. I just used a button and light I got from Radio Shack instead of trying to move the stock button. The button just toggles a flip/flop type of circuit in the computer that controls the transmission. As far as I can tell the computer powers up in the not locked out state and the state flips whenever the button is pushed. In order to change this you would have to change the power on state in the computer. I have no idea how you would do that. You might rig up some way to make the circuit once when the engine starts. That could be kind of tricky.
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Joe George
Eureka, CA
'95 2500 CC auto 4X4,3. 54,Combo EGT/boost guage,custom switch panel,PacBrake,TST #5,BD valve body,Automatic motorhome steps on both sides,Foldacover hard bed cover,Cummins chrome kit,Black steel grill guard,Front hitch receiver