ive been afriad to touch the a/c since i got it, i turned on the defrost once and the a/c clutch made a horrid noise so i just dont use a/c or defrost but the cruise still worksSignal 73 said:If your AC controls switch off of defrost, and your cruise control works (if you have it) Chances are your ok. There is a proper method of testing but I gotta dig that one up.