So - I thought the driving lights, standard triumph harness, had their own separate fuse, but I keep blowing the 5 amp speedo-illumination fuse. This last time I replaced the fuse, started the bike, everything fine - turned on the driving lights and the speedo lights immediately went out.

I am not sure, but the tail lights may be going out off of this too. I have the lights on the saddlebags working as tail & brake lights - they and the main light work as brake lights, but both are off as tail lights. Of course I discovered this assessing the damage after being rear-ended (brakes were on), so it may be related to that.

Any ideas ?