Horn multi-tone five-pipe flute horn 12V universal $ 38.86 Product description: The full set includes: 12V air pump-one Large, medium and small speakers 5 different sizes An adapter Hose connecting the horn and the air pump-root (cut to the appropriate five sections when installing). Relay one-one A set of screws and connecting pieces installation method: Relay installation connection: 30 to the battery positive 85 and 86 to the original two connectors of the original 87 to the air pump positive air pump negative pole directly connected to iron. prompt: The horn is a 15A pure current horn. The battery current of the original car is 15A, but after the fuse and relay are converted, the current reaches Once inside the car, it becomes 10A. Note First test the horn, connect 2 wires to the original car battery. Then connect the positive and negative wires of the wire to the horn, and listen to the sound!! The horn doesn't sound and there is no sound. Please note! Replace the fuse of the original car. [The fuse of the original car horn is 10A. It is recommended that the buyer change to 20A insurance. Protects car electricity Problem with the road] Replace the horn of the original car and install our horn. If the sound is not loud. See if the positive and negative terminals are connected correctly, if not OK ... just connect 2 wires to the battery, and then connect the relay to the wires. This protects the horn. Then connect the speaker on the line of the relay, pay attention to the positive and negative poles.