Horn relay diagram for Nautilus Horn
I don't have a diagram, but I installed my relay where the factory horn is mounted. the connectors from the stock wiring fit on the relay terminals. That way the stock wiring is maintained and it triggers the new horn.
I added a new wire (fused close to the battery) from the positive terminal on the battery to the positive connector on the compressor.
I added a wire from the negative connector on the compressor to switched connector on the relay.
I added a wire from the other switched connector on the relay back to the negative terminal on the battery.
I transferred the horn wires to the coil terminals of the relay.
Physical mounting is documented here:
http://www.kawasakininja300.com/for...0626-has-anyone-here-upgraded-their-horn.html