Wiring harnesses for the Moto Guzzi V85 TT: 2023 and earlier models

Plug-in-ready, relay-equipped harness for adding auxiliary lights to the Moto Guzzi V85 TT

APPLICABLE TO 2023 AND EARLIER MODELS WITH THE 3-PIN CONNECTOR LOCATED INSIDE OF THE TRIANGLE SHAPED BOX LOCATED IN FRONT OF THE FUEL TANK ON THE LEFT SIDE OF THE MOTORCYCLE - CHECK WHICH ONE YOU HAVE BEFORE ORDERING

Easily add aftermarket lights to the V85 TT. Plugs directly into the existing OEM Moto Guzzi wiring harness. Operates with the OEM handlebar switch. Extra long wire leads to support various routing and light placement options (1000 mm). Sealed relay. Includes terminals to make connections to auxiliary spot lights, LED lights, etc.

Note: Power to the spot lights flows through the existing Moto Guzzi wiring harness - just like Moto Guzzi did with the OEM auxillary lights.

Note: I've been informed that the original Moto Guzzi spot lights were rated at 35 watts each. If the spot lights that you plan to fit have a combined wattage rating of 70 watts or less, then this is the harness that you should use. If the wattage draw is greater than 70 watts, then I recommend my alternative harness that uses power directly from the battery.

Installation instructions

1. Open the triangle-shaped connection box located in front of the fuel tank on the left side of the motorcycle (see image below).
2. Connect the 3-pin plug on the new harness to the OEM Moto Guzzi harness inside the connection box.
3. Route the two pairs of red and black wire extensions through the connection box. One pair will go to each light.
4. Fit the relay and associated wiring inside the connection box and replace the triangle-shaped cover.
5. Make the wire connections at each light with the provided bullet terminals.
   • Black to ground/earth.
   • Red to power.
   • Feel free to cut the sheathing and wiring to the length needed.

Operating instructions

The following instructions were extracted from the Moto Guzzi owner's manual.

Daytime/night lights switch (02_64)

• Directing the switch towards the rider, the daytime lights are activated
• Directing the switch to central position turns on the high beam/low beam night lights.
• Directing the switch forwards activate the high beam/low beam night lights and, where provided, the fog lights.

Plug-in-ready, relay-equipped harness for adding auxiliary lights to the Moto Guzzi V85 TT

APPLICABLE TO 2023 AND EARLIER MODELS WITH THE 3-PIN CONNECTOR LOCATED INSIDE OF THE TRIANGLE SHAPED BOX LOCATED IN FRONT OF THE FUEL TANK ON THE LEFT SIDE OF THE MOTORCYCLE - CHECK WHICH ONE YOU HAVE BEFORE ORDERING

This version runs power directly from the battery, light operation still controlled by the Guzzi handlebar switch. Easily add aftermarket lights to the V85 TT. Plugs directly into the existing OEM Moto Guzzi wiring harness. Operates with the OEM handlebar switch. Extra long wire leads to support various routing and light placement options (1000 mm). Sealed relay. Includes terminals to make connections to auxiliary spot lights, LED lights, etc.

Note: Power to the spot lights flows direcly from the battery. Only the handlebar switch signal wire passes through the existing Moto Guzzi wiring harness. This is preferred if you are planning to operate high amperage auxilarly lights.

Note: I've been informed that the original Moto Guzzi spot lights were rated at 35 watts each. If the spot lights that you plan to fit have a combined wattage rating greater than 70 watts, then this is the harness that you should use. If the total wattage draw is less than 70 watts, then I recommend my alternative harness that does not require a connection to the battery.

Installation instructions

1. Open the triangle-shaped connection box located in front of the fuel tank on the left side of the motorcycle (see image below).
2. Connect the 3-pin plug on the to the OEM Moto Guzzi harness inside the connection box.
3. Route the two pairs of red and black wire extensions through the connection box. One pair will go to each light.
4. Route the wire bundle with the inline fuse through the connection box, then back to the battery.
5. Fit the relay and associated wiring inside the connection box and replace the triangle-shaped cover.
6. Make the wire connections at each light with the provided bullet terminals.
   • Black to ground/earth.
   • Red to power.
   • Feel free to cut the sheathing and wiring to the length needed.
7. Make the wire connections at the battery.
   • Black to ground/earth.
   • Red to power.

Operating instructions

The following instructions were extracted from the Moto Guzzi owner's manual.

Daytime/night lights switch (02_64)

• Directing the switch towards the rider, the daytime lights are activated
• Directing the switch to central position turns on the high beam/low beam night lights.
• Directing the switch forwards activate the high beam/low beam night lights and, where provided, the fog lights.