An existing assembly component has been completely overhauled, redesigned and implemented in a highly technically demanding way. The new TranzLight technology makes the indicator's transparent body itself into a lighting medium. One important aspect of the TranzLight technology is the added safety through the improved visibility of the indicator signal. The light is emitted at an angle of almost 180° and is thus visible from the front, rear and sides. The indicator control lights can also be done away with - the indicator function is directly visible at all times.