I have a recent MYLR (4 weeks old, 23 plate), just had a towbar fitted - during fitment they discovered that it needed this board so gave me a loaner overnight (M3P, rocketship!), all sorted by the next day and seems to work fine with my caravan lights. So it seems that it's still an ongoing issue with MYs that need this board fitted for the tow kit.
One thing that doesn't work is the permanent live, so no fridge or charging in caravan (which is fine by me, solar onboard and ice packs in the fridge!), The only real casualty for me is the fact my Alko ATC system (anti-snake, stability control) doesn't get power, so doesn't actually function, not a big deal, I tow carefully so don't rely on it, the onboard brakes are purely mechanical, so no issue there.
I'm toying with the idea of buying or making a very short 13pin extension cable, and then using a buck/boost to put 13v onto the perm live feed on the caravan side, just to get ATC active (not planning on fridge or charging, purely for ATC)
Bad idea, or something like this already exist?