i have been getting some pm's about the cruise control looks like i had it posted wrong but here is it.
Ok here is how i did mine. i got a cruise control unit from a 2002 ford explorer with the 10 pin connector attached to it. Got it off ebay for 30 bucks. About the only difference in units it the cable comming off the CC unit. This may or may not be the same way to hook it up in a 2000 model but it probably is. you need to find the pinout diagram for your year to confirm i got mine from ford dealership.
Cruise control connector. C171
PCM pinout C1381a
Pull the connector out of the PCM harness and solider connections to the 8 wires comming off the CC connector.
The first number is going to be the CC pin number and the second is the PCM pin number. So that means 1-9, 3-35, 4-18, 5-31, 6-24, 7-H.I.R., 9-28, 10-Grnd. There you go will work like a champ and all you buttons will work as well. Brakelight switch will turn it off simple as cake.