Originally Posted by urBan_dK
The seller (spitzbube) told me that he can no longer source the knobs where the ///M lights up, so it sounds like none of the new ones will at this point.
Replace it with the one from your OEM.
Some pix. Day and garage door closed simulated night. Keep in mind, I used the OEM cap. The one it came with would not have had the lit ///M.