Install LEGO plate

The sign features six holes that press fit onto existing LEGO pieces.

This build used a 1x8 plate for attaching to the trim of the building's roof.

Additional LEGO plates are added to the exterior of the build for best placement.

Cable Management

The cable can be fitted through the door on the top of the roof.

Store Battery

The coin cell battery holder can be stored away inside the apartment upstairs.