Great horn, very loud, will buy another one if I ever need a horn. If anyone wants installation instructions that are a little easier to follow, then read on. RELAYS: (Numbers on bottom of relay) Pin #85 on the relay must be grounded. #30 goes to the positive on the battery or any constant power source. #86 goes to the existing wire to your old horn button/or new horn button, whatever you have. #87 is the positive wire that goes to the horn terminals/connectors. HANDLES: There are two connectors for each horn. It doesn't matter what is positive and what is negative as long as one terminal is connected to power and the other terminal is grounded. I used all 12 AWG wires and connectors because I have some left over from a previous project.
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