Horn and Cruise Control both went out at same time.

What is your question?

Right after exterior and undercarriage car wash for this car, shortly after acquiring it. Checked all the fuses under the dash, all were OK. Baffled at first, checked with place that was installing two new tires. Their theory was that my horn had fallen off, said it happened frequently in older cars, with potholes, etc. Sounded fishy, went to my "real" mechanic. He popped the hood, and showed me a second fusebox under the hood, near the front of the engine compartment, on the passenger side. Went straight to one fuse, pulled it, and it was burned open. Replaced it, everything was OK again. Good think I knew enough not to have the tire shop install a new horn and then begin diagnosing the electrical system. And a good thing I know the difference between an installer and a mechanic. Understand what I am saying, and save yourself a lot of grief. YMMV PS This symptom also fit having the clock spring in the steering wheel break. Almost went for that one, but wanted to be sure before spending forty or fifty bucks and tearing apart my steering wheel (with airbag inside). BTW, my mechanic didn't even charge me, since I am a regular customer for any serious repairs I need. The other moral of this story is: check BOTH fuse boxes before going further.