Gregory Bender

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Relay and needed wiring to operate the horns using positive current (instead of the original Guzzi handlebar switch that provided the ground for the horns).

Part number: DOMINO-HORN-RELAY

Price: $15.00

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Horn relay and wiring for use with Domino handlebar switches.
Horn relay and wiring for use with Domino handlebar switches.
Horn relay and wiring for use with Domino handlebar switches.

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Relay and needed wiring to operate the horns using positive current (instead of the original Guzzi handlebar switch that provided the ground for the horns).

The Domino handlebar switch accuates the horns using positive current whereas the original Guzzi switch accuated the horn by providing a ground. This sub-harness replaces the relay under the fuel tank with a new relay and provides the necessary wiring to actuate the horns.

Installation instructions:

  1. Remove the fuel tank to gain access to the wiring.
  2. Disconnect the existing black and brown wires from the horns.
  3. Connect the existing black wire that you just disconnected to terminal 86 on the new relay.
  4. Connect the new black and brown wires to the horns.
  5. Connect both black wires with ring terminals to ground.
  6. Locate the existing relay under the fuel tank. Disconnect the group of three wires (brown, brown, and blue) from the existing relay. Connect these three wires to terminal 30 on the new relay.