I installed a auto zone horn to my Mitsubishi in place of the factory one it had two when tried it blown the fuse. I unbolted it from the car and it works but if i bolt back it doesn't Whats wrong.
Sounds its wired backwards. Horns will work that wat as long as they are not grounded through body of the horn. they make then that way so you can mount them on other materials as not limit them to just metal.
When i put a tester on the two exciting wires their both hot
One should be power the other ground when the horn button is pressed. If this is not the case, then it sounds like you have a crosscircuit somewhere in the horn wiring. Also double check the horn from autozone, make sure it is vehicle specific, if it is a universal it won't work.
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