Did you take any pic's Dave when you installed the protected 12 pin connector with the patch cable location etc.
I didn't take photos, however, I did record this video....
And here's a screenshot taken from it.
There are two fuses in the patch cable, my guess is one is the heated screen while the other is the rear fog light. However, it could be tthe heated screen and the heater fan, TBH all three are fairly high amp circuits.
I'm sure someone will confirm the circuits after studying the video? I'm calling it a patch cable because one end plugs into the factory loom, and the other end plugs into the PCB, so the fuses now sit between the factory loom and PCB thus protecting the board.
The patch cable is only 5" long, and looks to me like it was designed to make retro fitting fuses super simple for a Morgan dealer, probably when they were replacing a disgruntled customer' PCB. When I saw it on my replacement PCB (that came from a 2018 4/4), I thought "I'm definitely including that", this was as simple as plugging my factory loom into the patch cable that was already plugged into the PCB at the other end.
Both the fuses are 5a, and like I say... there were only two of them!