Swapping differentials to achieve electronic locker

Ok so I have the TRD Sport 4x4 and was wondering if it is possible to swap the rear diff out and put on the TRD Offroad one to achieve the E Locker. How many wires go to the plug for the E Locker? Is it just a simple 12 volt + and a ground wire or is it there more to it? I just finished rebuilding my tranny but while I have everything pulled apart I was just going to pickup a TRD Offroad diff from the junk yard and regear my diffs then put that one on instead. I have to run wires to my truck bed anyway for my winch so I figured I would just buy the factory Rear Diff Lock button and run those wires at the same time. (unless of course the factory wiring plug is there)

Let me know what you guys think.

Thanks!

 

Why not get an arb air locker?