Just for future reference, I gave up, went around and changed every exterior bulb and the problem cleared up.
I found that Ford designed the ECU to disable the cruise if it detected any perceived defect with any brake or tail bulb and even though they all worked one must have had a high resistance or whatever and now new bulbs have cured the problem.
I just LOVE Detroit!
Thanks for you input and you can close this thread or use it as you wish, I'm done and gone.
Wednesday, April 17th, 2013 AT 5:06 PM