To provide an auxiliary light whereby the position of a housing can be adjusted as far as possible.

In an auxiliary lamp 11 having a housing 12 provided with a lighting fixture in the inside and formed by providing a bearing support part 13 in a side part 12a and a bracket 14 with one side 14a bearing supported to the side part 12a of the housing 12 by the bearing support part 13 and the other side 14c suitably supportable to a car body, in both one side 14a of the bracket 14 and a bearing support part 13 of the housing 12, a circular arc-shaped surface 16, 17 with a right/left almost central location of the housing serving as the center is formed.