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).

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 actuates the horns using positive current whereas the original Guzzi switch actuated 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. Route the new long brown wire to the fuse panel. Connect this brown wire to the fused side of the fuse panel.