Dodge 2012 Ram Truck Gas 1500 Owner's Manual page 595

WHAT TO DO IN EMERGENCIES 593
6
4x4 Jacking Location Rear Jacking Location (All)
For 4x2 and 4x4 trucks, when changing a rear wheel, Connect the jack tube extension and wheel wrench.
assemble the jack drive tube to the jack and connect the
drive tube to the extension tube. Place the jack under the
axle between the spring and the shock absorber with the
drive tubes extending to the rear.