The 2006 Dodge Ram 1500 does
not have a readily accessible fuel pump shut-off switch like some other vehicles. There's no easily located switch in the cab or under the hood. The fuel system is controlled electronically, and disabling the pump would typically require disconnecting the fuel pump relay or fuse in the power distribution center (PDC). This is more involved than a simple switch.
Warning: Working with the fuel system is potentially dangerous. Disconnecting the fuel pump relay or fuse incorrectly could damage components or create a fire hazard. If you need to disable the fuel system, consult a qualified mechanic.