For the fuse chart:
http://flashoffroad.com/electrical/fuse/fuse.htm
As far as the blower motor, does the motor itself run? Can you hear it spinning? If so your vacuum pump is shot, its located under the alternator. Its a GM part and can be had at any Napa or the like. The install isnt too bad, but you will need a power steering pulley puller to do the job.