coming out of one (or all) of the contacts I know it looks a bit haphazard with the connectors but I didn't know there were 3-pin and 2-pin types when I ordered one last time (only 4-5 months ago), but the lights do come on when required. just gotta order a new 2-pin one now (from VW heritage this time)
vid of evidence:
http://youtu.be/jWjGiAuQKyc
hope this helps someone