When should the Letter G be turned on?

Most purpose-built Lodge rooms have an illuminated Letter G on permanent display in the East that is turned on and off with an electric switch. It is worth noting, however, that the only time the Letter G is required to be displayed is at the conclusion of the Middle Chamber Lecture, and there is no requirement that it ever be illuminated. Indeed, the only time illumination of the Letter G is mentioned in the Ritual book is to specify when it must be turned off. This makes it the Lodge’s choice when and whether the Letter G is illuminated. A good choice would be to turn it on and off together with the general purpose lighting of the room—e.g., before the meeting commences and after it concludes—and as the Ritual specifies.