A light fixture comprising a rotatable housing, a mounting yoke and a mounting fixture for securing the housing directly to the top of a hollow post to permit the housing to be directed straight down or at a tilt angle to either side. The housing includes integral or insertable axle portions that protrude from either side of the housing. The top of each side of the yoke includes a support casting with an opening for receiving the respective protruding axle portions of the housing. Matching indicia on the end of at least one of the axle portions and the receiving casting hub provide degree of tilt information. Wiring from the power source coming out of the top of the post progresses through one or more appropriate channels in the yoke, through the appropriate casting and through an accommodated protruding axle portion. The yoke is preferably comprised of at least one tubular member. The mounting fixture in the form of matching top and base plates mounts the center brace portion of the yoke to the top of the post.