WARNING: This page is about a different car, the 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 6.7L Turbo Diesel, Cruise Control Circuit (1 of 3)
Fig 2: 6.7L Turbo Diesel, Cruise Control Circuit (2 of 3)
Fig 3: 6.7L Turbo Diesel, Cruise Control Circuit (3 of 3)