Abstract: The self-contained portable unit is attachable to and detachable from the shaft of a golf club and has a base mounting plate supporting a pair of light emitting diodes (LED) aimed in opposite directions parallel to the shaft of the club. The base plate supports removable batteries electrically connected through a switch to the LEDs; one LED is aimed downwardly towards the club head parallel to line of shaft and the other LED is aimed upwardly towards the handle end of the club parallel to line of shaft. Using a target line, such as the edge of a rug, a piece of string, or line on a hardwood floor, an imaginary ball is addressed in the normal fashion so that the light towards the head traces the target line and then once the club passes a parallel position the second light picks up the same target line while the swing is continued to the top of the swing.