new to the group

all I am new to the group .The reason I have entered your group is because I am Having problems with my headlights.dash lights,door locks,and horn not working in my firebird.I have ruled out all possabilities as far as fuses go.I had the problem once before and a fuse fixed it all but not this time.Was hoping someone with much more experience could give me some advice.I read online that it could be the headlight control module but will that cure all of my problems?