If you plan to post to Classified forums, you must follow these rules, or your post will be deleted.
you wouldn't want it
the body harness that you want is also connected to other wires and you'd have to wire non-elocker related things.
option 1 - if you are pre-wired and want to use the cpu - create your own body harness ( Retrofit Electric Locker )
option 2 - if you are not pre wired, you should buy a complete harness (bypass locker cpu - elocker to switch)
i am also going through this now. good luck!
switch is a switch
i am sure you can use factory switch, but i'm not electronic wizard so can't help much more.