If the fault starts when you first start rolling, when it would normally shut off, I had this fault repeatedly a couple years ago on a trip down the Blue Ridge. I was with 2 buddies on Harleys, and they were wearing much less clothing, as a result I was always in a hurry to get going. The fault occurred almost every time when we pulled out. Starting the bike puts a major draw on the battery but so does the brake light. When I thought about what I was doing I realized I was always quickly starting the bike while holding the front brake and quickly pulling out. I finally started taking my time and would start the bike, not hold the brake, and keep the RPMs up slightly to get a charge back to the battery for a few seconds, (maybe 15) before starting out, and the problem went away. I have made this a part of my normal start sequence and since then I have not had to reset the ABS light.