I have fitted an HRC Datalogger (P/N 06300-NKZ-010) to my RS125. The question I have concerns an orange plug with 3 wires that feeds into the logger marked "Lap" on the wiring diagram. In the installation section it is marked as "unused". I am unable to locate any information on what I plug in here. I suspect it would be the input from a lap timer beam or a magnetic strip. Previously I have used AIM and 2D loggers which have had similar inputs, but cannot locate information on what would feed in at this plug.

Can anyone help?