Abstract: A self-contained detachable device for selective attachment to a golf club to provide a visual indication of the position of the golf club during the swing includes a cylindrical housing which has a light bulb attached to one end to provide a directed beam of light extending outwardly from the housing and a cylindrical mounting cap attached to the other end for removably attaching the housing to the grip end of the club shaft such that the light beam is generated accurately along the same common longitudinal axis as the golf shaft. A first preferred embodiment includes a peg attached to the center of the mounting cap for mating engagement with the opening typically found in the center of the golf club grip end to provide secure and accurate mounting of the housing, as well as a switch provided on the outside of the housing for selectively turning the light bulb on and off.