French Road Trip Headlight Query

Hopefully going on a road trip to France in a couple of weeks via the channel tunnel. We're hoping to get down to the Atlantic coast around La Rochelle via the Loire Valley, which should be rather nice this time of year - I hope.

One question though. How do I convert the UK RHD headlights for France? On my cars in the past there was always a mark etched into the glass that you covered up with either black tape or official stickers.

The late 1990's Cougar I had even had a switch on the back of the headlights that moved the settings from LHD to RHD and vice versa. Is there something similar for the Prius or do I just have to guess where to stick the tape and hope Monsieur Gendarme doesn't look too carefully?

 

Ooops I've duplicated this - please refer to Freds House of Pancakes.

Sorry