A formation light was a source of illumination mounted on the exterior hull of a starship or other spaceship, similar to a running light.

On a Constitution-class starship, formation lights were situated on the dorsal surface of the primary hull, either side of the impulse engine, and on the underside of the secondary hull beneath the shuttle bay. (ST reference: Mr. Scott's Guide to the Enterprise)

Formation lights were mounted in several positions on Galaxy-class starships, such as the aft secondary hull, dorsal and ventral surfaces at the rear of the warp nacelles, and the starboard and portside rim of the primary hull. (ST reference: Star Trek: The Next Generation USS Enterprise NCC-1701-D Blueprints)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.