This process can be applied to any bulb located in the rear cluster.
TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC-TIC
This noise coupled with an extremely fast flashing indicator normally means a blown bulb.
So on this occasion it was the rear nearside that had decided it had served its time.
[youtube http://www.youtube.com/watch?v=dj5vq7GkwBk]