Hey FP I'm using the Morimoto H7 elite kit which I got last year from retrofitsource. For mine, the BO light comes on when one of the lows misfires, which only happened a few times when it was REALLY damn cold here in Chicago since Scarlet Rose is "almost" my daily driver.

What I found was interesting, was that sometimes that issue with the misfire would go away completely if I REMOVED the "canbus" harness from the kit. Been running the kit without the harness, and there's no BO warning while the lights are running. My kit is the 35watt one too, and it seems the car doesn't need the canbus harness at all to play nicely with the kit.