My horn has not been working for the past few months. When i bought the car, the horn was very weak. It almost sounded like a little civics beep beep horn lol. When my friend was looking under my car he said it looked like the some of the horn lines were cut or something.

I dont know anything about horns, but 3 months ago the horn just decided to stop working. Does anyone know how much it cost to fix horns. How much a shop would charge?

The horns in your year are a common issue. Typically they get filled with dirt etc and that causes issues. It is very easy to get to them if you remove the clips holding in your driverside front fender lining (plastic) and they are right there in front of the tire. I would suggest replacing with new.

Hopefully this helps you save some money on them, as I'm unsure how much horns would cost. Rockauto and your local parts stores should be able to get them for you.

So its easily to install/unistall?

Compared to some of the stuff you've done. It sure is.