Gray (blue/red) wire mod and ECU
 

So in my searchings I came up with 2 quick questions.

1- is it possible to run basic wires for the locker and totally eliminate the need for the wiring harness and ECU stuff. Like a window up and down but for a locker. locked/unlocked?

2 - If my 4runner came with out the locker do i need to switch out my ECU under the kick plate?


'97 limited V6 4runner

This should answer your questions:
http://www.4runners.org/writeups/elocker/

There's also links to other elocker writeups at the bottom of the page.