Thanks. Nope, it’s not the bulbs, tho’ I had them replaced because my mech thought it might be caused by socket corrosion. The warning says “Brake light circuit - see owners manual.” It has a Priority One ranking, which means the warning stays on until the engine is off. If I restart the engine the warning goes away. The warning often stays off for weeks and then will reappear for no apparent reason. Btw, there is nothing in my owner’s manual about it.