4WD control moduel? Are you trying to use the 2006 Explorer 4WD control module with the 2003 Ranger transfer case assembly? If so, I don't see a magnetic clutch on the 2003 wiring diagrams. I'm afraid I'm not familiar with 4WD since my Sport is only RWD. The 2000 Explorer wiring diagrams show a magnetic clutch that allows shifting from 2H to 4H at any vehicle speed and from 4H to 4L when the vehicle is stopped and the clutch pedal position switch is closed for M/T. On a 2000 it looks like the GEM outputs control the electric shift control module. I suggest spending some time to understand the wiring and functions of the various components before purchasing another transfer case.