Your answer is a start, but does not yet give me all of the information I need to resolve my problem. I performed the code check and it displayed the following codes:
In that order. What problems do these codes refer to? Can the clockspring be replaced? Can I take one out of a similar cruise control in a junkyard and install it into my cruise control? What does the clockspring look like?
In addition, the more serious issue is the engine overheating due to the double radiator fans not coming on. I previously replaced the radiator cap with a new STANT one, and it still overheats and spills fluid onto the ground, lowereing the volume of fluid in the radiator to an unacceptable level. The fans are not coming on, Why? I assumed it was related to the cruise control/dome light/horn electrical issue.
I ordered and received a new clockspring from RockAuto.com and installed it on Sunday, 11-7-10. Upon removal of the old one, I noticed the plastic "tab" or "pin" on the top of the clockspring, which engages with the underside of the steering wheel was broken off. That pretty much confirmed to me that you were on the right track. I had the wheels straight when removing & installing the clockspring, so all was OK when I test drove it. Clockspring replacement appears to have resolved BOTH the blaring horn and the non-functioning cruise control issues. I also purchased an OBD2 scanner and cleared all codes and test drove the van. NO new codes were set. The double radiator fans now come on, but sometimes seem to take a long time to come on(In my opinion). I ran them for a long time (30-40 minutes) and don't seem to be binding or making noise or anything. I think it might have been just a leaking cap, or somehow related to the broken clockspring. I might replace the radiator fans as well. I monitored the coolant temperature with the OBD2 scanner, which interfaces with my personal laptop computer, and the coolant temp stayed around 219 degree F at idle, and less when running. I think it's ALL fixed. I would like to thank you for your technical expertise and stick-to-it-tive-ness in helping me fix this rather unusual problem(unusual for me).
I'll be using JustAnswer, and hopefully Dodgerench again in the future!
Certified Shade Tree