Thanks for your replies.

The battery is good - or at least the test says so. The windscreen is original and has the stamp.

Sorry i think i may have confused - i don't mean the service indicators - i mean the left / right green arrow indicators. Not sure what they are called in the USA! I've checked both foot wells in the front and everything seems to be dry, no sign of water ingress that is obvious.

Today with the sidelights on, everything seems to work ok - the indicators (left and right) are ticking, but they go a bit out of sync, as in the 'tick' is not as uniform as it normally is. I will try tomorrow to get a video.

Thanks again :-)