Does the a/c not come on or does the fan not come on?

Sounds like you have a fan relay (not switch) problem.....

"kwp" > wrote in message
ups.com...
> Okay, on my 2002 Wrangler, the a/c doesn't come on until the fan is on
> the third or fourth position (either of the two highest speeds). Can
> anyone tell me what's wrong? To date, I have attempted to correct this
> by swapping out the instrument panel control unit (still the same
> problem of uncooled air on the two low speeds and cooled air on the two
> high speeds). Thanks for any help on fixing this!
>