The Moss replacement looked like a good item and a direct replacement. Guess I'll call them and ask about it.
Revington was going to charge 50# to ship (!!!) so I blew it off. Rain-X for the time being.
Wow, wonder when they decided to up their shipping charges, 50ÂŁ just to ship a switch is much more than I had ever paid them to ship small parts before.
I went to the Moss and the Moss Europe pages to see what they said about that switch, note that unlike Moss US, Moss Europe uses Triumph/BL part numbers for the most part. Moss Europe lists the Lucas switch as well under 155496Z, then cross reference it to the 155496 that is a reproduction of the original Clear Hooter switch fitted to the car. Moss Europe also shows the reproduction Clear Hooter switch to be on backorder. Is this a terminal backorder or not? Hard to say but that may be the reason that Moss US just shows it as NA/not available.
Now here comes another fun part, even if you could readily get your hands on one, the reproduction of the Clear Hooter switch is not just a plug and play replacement. Per this bit from Moss US (
https://mossmotors.com/media/instructions/635-772_155496_INST.pdf ) you will need to snip some terminals off your wiring harness and replace them per those instructions. I can also say from the voice of bad experience that you will need to double check the size of the hex shaft as well. The originals were 1/4" hex. I have seen reproduction parts where the hex has been changed to 6mm which is just a bit smaller, just enough smaller to where the knobs will fall off. I can't say with any certainty one way or the other if that is a problem with the hex size on this part, just that I have seen other parts where it was a problem.