I have a 2012 e-250 superduty cargo van that doesn't have cruise control i've seen various YouTube videos that show by replacing the clock spring and putting in a cruise control steering wheel i can get cruise control on my van by having it turned on in the ECM i was looking around the master cylinder and didn't see a speed control de-activator switch just a brake fluid level switch do i have to replace the master cylinder to get cruise control or is it already pre-setup from the factory and located elsewhere or do i need to get more components? if i have to get more components it seems hardly worth the investment. sorry if this has been asked before i didn't come up with anything under the forum search function

 

Have you considered an aftermarket cruise kit like the Rostra kits? Very cost affective, simple to install..

 

I made a video with the Rostra Cruise Control install and I think this will work for you too! They have other models that should fit your E series.
Best of luck!