The O/D on/off button on my 02 does not work. Since I work at a auto shop I can get the whole shifter assembly for about 50 bucks. I was wondering though how the button works. Is it an on/off switch or a momentary on/off switch that is normally open? I'm guess it is momentary normally open. When you hit the button it sends source voltage to the trans and kicks the OD off.

I thought maybe I could just cut the wires inside the column and run them down to a different button if the problem is in the switch.

 

Not sure what kind of switch it is but mine went bad in my ranger also, you have to replace the whole shifter assembly cost me a whole $5 bucks out of the junk yard...