Color light signals are often installed in a V-configuration.� This is easy to accommodate due to the modular design of the light units.� Facing the signal, the usual aspect placement is green on the left, yellow on the right and red on the bottom.�

Below.� Back of V-configuration color light signal having a single multi-light unit and two doors.

Above.� Three single light units attached together with two angle brackets and a top cross piece.� I added the threaded rod and nuts to the top cross piece to allow the signal to be secured in part to a ceiling rafter.

Older V-configuration color light signal with unusual back door.� We�ve come a long way since then.