For those with cruise control not functioning, or funtioning poorly. ie, mine was hunting, surging, and sometimes would not engage at all. I heard that re-soldering poor connections was a poosible cure. I tried this to no avail. So - with nothing to loose - I used my propane torch on a low setting, amplifier outside on a level surface (portable vice) and quickly passed the tip of the flame over all solder connections, just long enough to see them melt and then kept it moving. Logic being with that much heat the solder would melt quickly and yet not damage the components on the reverse side. Anyway - installed and all is well - all functions work as they should. We'll see how long it lasts.
Cheers.