All I can offer is this behind dash image from a much newer Roadster, although likely similar.

[Linked Image]

The blue and black wires (centre image) running down from the screen heating elements can be seen attached to green/orange and black wires of main loom via bullet connectors.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone