Do the new horns have two wires or terminals?

If so -

Check your existing wires

One should have 12 volts all the time.

The other should have nothing - when the horn button is pressed, that wire should have 0 or a couple of ohms to ground - it should never have voltage on it.


If your existing wires are as I mentioned, connect the 12 volt wire to the + terminal of the horn and connect the wire that grounds when the horn is pressed to the - terminal.

If your new horns have only one wire or terminal they are made for some other circuit arrangement.

If so email me or mention it in this thread.
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'96 855R,'64 PV544 driver, '67 P1800 basket case, '72 Yamaha Rd400, '68 Honda 350-4, '12 XC70, the first 5 are mine, heh, heh, 525,000 miles put on 10 bricks James A Sousa