How to Install the Nautilus Compact Horn FJR1300
The FJR1300 Nautilus compact horn is manufactured by the Stebel company. The horn consists of an air horn tube and small compressor, universally designed to fit on any motorcycle as well as many ATVs. The sound dynamics of the Nautilus compact horn delivers a loud, piercing blast that outperforms stock diaphragm horns. With the ease of mounting and the wiring loom provided, any do-it-yourself repair person can install the Nautilus compact horn on their motorcycle or ATV.
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Things You'll Need
- Nautilus compact horn kit
- Socket set
- Ratchet wrench
- Screwdrivers
- Aluminum mounting strip
- Tin snips
- Wire strippers
Instructions
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1
Set the kickstand of the motorcycle or put the ATV in gear and remove the key. Access the battery box by lifting the seat on the hinge pins or unscrew the battery box cover with a screwdriver. Use a socket and wrench to loosen and remove the negative battery cable. Move to the front of the motorcycle (or ATV) and locate your stock horn, usually found in vicinity of the fork tubes or downdraft frame. Size the new Nautilus horn against the stock horn with the Nautilus horn tube opening facing downward and slightly toward the rear of the bike.
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2
Examine the stock horn mounting hole to determine if the Nautilus horn will fit in that location. Pull the one or two wires from the stock horn, then remove the mounting bolt (or screw) with a socket or screwdriver. If the stock horn has a small, angle bracket connected to it, transfer the bracket to the Nautilus horn and tighten the bolts with a socket or screwdriver. Place the Nautilus horn on the frame and insert the mounting bolt from the bracket to the frame. Tighten the horn in place with a socket or screwdriver.
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3
Cut a piece of perforated aluminum strip with a pair of tin snips to the proper length to join the new horn to an alternative, old horn mounting surface if your existing horn bracket will not accommodate the new horn. Find a good frame source, either on the fork tree, upper motor mount or at the radiator mounting bolt.
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4
Secure the aluminum strip bracket to the Nautilus horn with the frame bolt and tighten it with a socket and wrench to the frame. Tilt the horn opening downward and slightly angled toward the rear of the motorcycle by loosening the horn tube pivot screw, moving the horn, then tightening it with a screwdriver.
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5
Take the two blue wires on the Nautilus wiring loom and connect them to the two, old, horn wires. The fittings will be push-on blade types or bullet-type connectors. Use wire strippers to cut the the ends of the old horn wires, strip them, then attach the connector fittings you need. If you have only one wire from your old horn, secure the other blue loom wire to the horn mounting bolt to serve as a ground. Use an eyelet connector provided in the kit and cut and strip the end of the blue wire. Crimp an eyelet on the end of the blue wire with wire strippers.
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6
Connect the red wire (from the same end of the loom) to the "+" terminal on the horn compressor and the black wire to the "-" terminal on the compressor. They are both push-on blades connectors and will fit precisely. Look at the wires on the other side of the loom. Take the black wire and route it to the negative clamp on the battery. Unscrew the terminal nut, place the eyelet on the small bolt and tighten the nut with a socket.
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7
Push the red blade connector, which has the fuse connected to it, onto the top terminal on the relay. Run the other end of the same wire to the "+" clamp on the battery. Remove the battery cinch nut and install the red eyelet wire on it. Tighten the cinch nut with a socket.
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8
Connect the blue wire from the loom to the next relay post down by pushing the blade connector on it. The next post down on the relay receives the red wire from the loom and the last post on the relay receives the last blue wire. Temporarily connect the negative battery cable to the battery and test the horn. If it works, use the tie straps provided in the kit to secure the wiring to the frame of the vehicle, tucking them in neatly. If you have no sound from the horn, recheck your wiring configuration and try again.
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9
Tighten the negative battery cable with a socket. Snap your seat back into place or replace the battery box cover and tighten the bolts with a socket or use a screwdriver for screw heads.
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References
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