I've been told by Chrysler that the 4 aux upfitter switches are not field upgradeable, yet when you look up the parts, they are cheap and available. Wire harness, fuse/relay box for under hood, and a new switch plate. Should be plug and play in 2014 models, and not controlled by the EVIC
I got tired of looking and the local dealerships were no help, so I did the same as above, installed my own in one of the center dash option plugs (where a second cig lighter/power port/usb port would go)
Apparently, the aux switches are popular with the 1500 owners and many have added the OEM switches to their trucks. A quick Google will provide 100's of how to's.
Here's one I found: http://www.dodgetalk.com/forums/showthread.php?t=365305