Would a regulator act like that, sending sudden bursts to the fuses now and then ? And always blow the same fuse (starter/lights/tacho) ?
Wouldn't it just stop working instead of being temperamental at times ?
Yes,a friends 2002 le mans was popping fuses whilst riding. He took it to his usual mechanic who took it for a run with a meter attached and diagnosed the r/r fault which he replaced and then all was well. I suppose you could prove it by disconnecting the r/r (fuse3 30a) and see if the fault goes away.
edit: just spoke to Harry who had the problem above and it was always the 15a fuse 5 that was blowing.