Headlight movement.

Before I SORN'd the car I recall that I had movement in one of the lights as I saw the beam against the wall slowly move. I remember reading something about this before but can't recall where now Ring any bells with anyone and if so what's the issue and fix please?

It's traditionally a dirty contact strip in the light servo motor. It unclips from the light unit and then separates into to shells; *gently* clean the track where the little wiper lives.

Up/down or side to side? presumably only up/down, and caused by the levelling motor doing its own thing?

http://www.fiatcoupeclub.org/forum/ubbthreads.php?ubb=showflat&Number=1450667#Post1450667

Or a PDF at:

http://docdro.id/5lB4oHR

Thanks peeps for your prompt response as always - and yes it's a slow up/down motion.