I have a 2007 1200RT with 45,700 miles on it. This last week I have ridden to work 4 times (100 mi round trip each day). The first day when leaving work, my electrical circuit for the auxilary plugs (which has my Garmin and the BMW LED aux brake light on it) went dark about 10 min into the ride. It then began cycling on and off at a rate of approx 1 min ON to 3-5 min OFF for the next 30 miles, until I stopped for gas. When I restarted the bike after gassing, it worked fine the rest of the ride...and the next day, and the next.
Yesterday, I got on the bike to ride home, and I got a front tire pressure warning, saying it was at 0 (flat), right after I pulled out of the parking lot (Yes, I had let the computer do it's full diagnostic before starting the bike). I pulled over and physically checked the tire, restarted the bike, and it was reading normally. But then, a short time into the ride home (10 min or so later), the intermittent power lead thing started again, and continued all the way home, even after restarting the bike at the gas pumps midway home.
I haven't gone out yet today, but before I go to my local dealer, I wanted to see if anyone else has any insight to a possible cause, or better, a possible fix.