Replaces rubber antenna grommets when factory antenna is removed or relocatedEach unit encases 40 red chip-on-board (COB) LEDs behind a faceted lensDual intensity dim red running light with high intensity function (depending on model).Plug-and-Play with model specific wiring adapters part #s 2050-0420, 2050-0421, 2050-0422, 2050-0423 (sold separately).