[TramsDownUnder] LED headlights on C1/D1/D2 class trams

Took a few fairly poor quality photos of some C1, D1 and D2 class trams that have been newly fitted with LED headlights.

Unlike the Z3/A/B2 classes, the LED lights appear to be a straight swap for the old globes.  Given that I have seen at least two trams with the old lights then with the new lights two days later, it would seem likely that they are being swapped over at the depots, not as part of some overhaul done at East Preston Depot.  No other modifications to the tram are visible (with possible exception below).

The C1 (Citadis) trams seem to be almost completed.  D1 and D2 trams are being done rapidly, though a few still had the old lights.  The C2 (Mulhouse / 'bumblebee') trams were done years ago.

One oddity is that the trams (as well as the A-series trams) seem to have been modified so that the headlights turn off and the tail lights come on (at the front) if the driver leaves their seat:  I saw D1.3517 with tail lights on at both ends at Swanston St terminus.  I suppose this is some kind of safety feature, but it is somewhat confusing at times:  from a distance of a block or so, it looks like an approaching tram is about to shunt - or the driver has suddenly taken it into their head to run bang road back up Collins St...