4 wheel drive shift control module on 2002 Ford F-250 Super Duty

Truck will not engage 4 wheel drive. Put new motor on transfer case & a new switch in the dash. Still will not engage. Will be replacing the shift control module. Need to know exactly where it is located.

3 answers
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Do you have a light on for your anti lock brakes. If so 4 wh will not engauge unlil you relace the anti lock switch on the back of the transfer case
the 4 wheel drive is out on my 2002 dodge dakota sport. dont know exactly what part to order for it, or where does it go. its a 2 door, stick shift. can you please help me, i've had several people looking at it.