im trying to hook up a new horn cuz my crapped out. im trying to run it off the stock harness cuz that seemed easiest. im not sure what to do? do i need a relay? hooked to the harness i get nothing. can you help?

 

You should be able to use the factory wires from the horn. Just cut them off the connector and splice them into your new horn. Or you could do what I did and install train horns.