ELECTRICAL CONNECTIONS (MOTORCYCLE FACTORY TWO-WIRE HORN SWITCH)
Disconnect both wires from the factory horn.
Attach PIN 85 of the relay to any of the wires on the factory horn.
Next attach PIN 86 of the relay to the remaining wire on the factory horn.
Use a positive (+) 12-volt battery or alternator to connect PIN 30 of the relay. Make sure you use a 16-gauge
wire or heavier and a 20A fuse (not provided) to protect the electrical circuit.
Using the minimum 16-gauge wire, connect PIN 87 of the relay to the compressor’s positive terminal found at
its bottom.
Again, using no less than a 16-gauge wire, connect the compressor’s negative (-) terminal found at the
bottom to ground, any rust and paint free metal body bolt or the negative (-) battery post.
RELAY TERMINAL CONNECTIONS (RECAP)
PIN 85 is connected to one of the wires of the factory horn.
PIN 86 is connected to the remaining wire of the factory horn.
PIN 30 is connected to a positive (+) 12-volts power source protected by a fuse.
PIN 87 is connected to the positive (+) horns terminal of the compressor.
IMPORTANT: The relay provided with this horn kit should be used to protect the wiring and the button switch of the
factory horn. Most manufacturers of motorcycles do not provide a relay in the horn circuit because original factory
horns draw less amperage.