I am still getting to know the bike and while washing her today, on the battery cover side, I came across the attached connector. Any idea what it is? Looks like a protective cap is missing.
You give no information. If your bike is a brand new 1250 and you have found that then it must be factory fitted. If you are the 5th owner of an older bike then it could be anything that we can all guess at. Do we have to guess the bike first?