Aye...I'd forgotten that bit
Cookie, as for the point, it does several things I like......mainly runs the leds signal repeaters on my panniers (vectralights) 'cos my panniers stick out behind enough to obscure the indimacators from anything more than 30 degress off my centre line.........
But it also gives me indimacators all around on as running lights (in three levels of brightness if I so choose), it auto cancels the flashing (again, that's something you can set the delay period for) and as Whatton rightly said, if you've got a brake on (like at lights) it over-rides the cancel function......and it also means you can indicate with the normal switch, then hit the same switch again to cancel....something a lot of people have moaned about for years
Apart from the single wire connection to the brake light feed, it's literally only a two minute job to swap out 'cos it's a direct replacement for the BWM flasher unit