My horn don't work

traceymckellip start off by applying 12V directly to the horn. Watch the connectors and - goes on ground so anywhere on the horn mount will be fine. If your Horn sounds you know it is good. Then check all of your fuses (we need the proper year to help you out with that) to make sure it is good. Last you can check the horn relay which is located on right hand side on top of the fuses box.

You can also check on the relay if your switch is working. You'll need a simple multimeter for that. Let us know if you have the tools to do so in case you need further help with that.