Sounds like if you didn't need a new switch before you do now.
There's a little spring loaded button on the switch you have to press to get the knob & shaft to slide out, then its just a matter of unscrewing the nut from the switch. If you crawl under the dash with a light you should be able to see the button- or go buy a new switch and see where the button is- it'll be the same place on the old one.
Once you've replaced the switch check everything again & hopefully all will be ok- if not post again & someone will reply.
Don't give up yet- we all started somewhere and you'll get lots of help here!
