FixVault

Input Speed Sensor (4.7L/5.7L) Connector End View

WARNING: This page is about a different car, the 2008 Jeep Grand Cherokee, 2007 Jeep Grand Cherokee, and 2006 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
SENSOR-INPUT SPEED (4.7L/5.7L) - 2 WAY

GCWH680350Courtesy of DAIMLERCHRYSLER CORP.
CAV CIRCUIT FUNCTION
1 T52 20DG/WT INPUT SPEED SENSOR SIGNAL
2 T13 20DG/VT SENSOR GROUND