blower and horn

My blower for the A/c comes on intermittently.  I have replaced the main relay/blower and that didn't work.  Also, horn doesn't work.  All fuses related to horn have been checked and are okay.  Any suggestions????

the intermitten blower could be caused by bad contacts inside the blower motor. either the wiring to the horn is bad, the horn itself, or u have a bad clock spring.