a/c issue

2000 Cherokee: occasionally when a/c is turned on, the fan won't come on. Compressor kicks on, but blower or fan doesn't. Right now it is working, but just a couple of weeks ago, it wasn't, then became an occasional problem. Any suggestions?

I think I'm having a similar problem, any success yet?

Relay behind glove box. Twelve buck at dealer. Swap it with the horn one just to be sure.