Adjustable mount for vehicle exterior light

A light assembly for a vehicle includes a first housing having multiple voids that are circumferentially spaced apart about an axis of rotation of the first housing, a second housing coupled to the first housing, a light module coupled to the second housing, and a first retainer. The first retainer is mounted adjacent to the first housing and is movable relative to the first housing from a first position in which the first retainer is at least partly received in at least one of the multiple voids and a second position in which the first retainer is not received in any of the multiple voids. In the first position, the first retainer inhibits or prevents rotation of the first housing relative to the first retainer, and in the second position, the first retainer permits rotation of the first housing relative to the first retainer.