Solenoid, High Pressure Fuel Shut-Off: Description: Description
WARNING: This page is about a different car, the 2016 RAM 3500 HD and 2016 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: CNG Pressure Regulator
Courtesy of CHRYSLER GROUP, LLC
The high pressure fuel shut off solenoid (2) is located on the fuel pressure regulator (4).