[yrktreg]

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It can be done but you need:
Rear w dif lock
Module for rear dif (rear ds cargo area)
Module for center dif (under pass seat)
Wiring for dif and rear module
New switch in center console.

The rear dif uses a step motor and is not as simple as simply giving it 12v which is why you need the module that has the motor drivers built in.