I have a 72 cb350f and it had drum brakes all around. the problem is that the brake light switch is missing. since, I believe, the 350f's came with disk I am not sure of where to even begin searching for this part. if in fact the original 350f's did come with drums up front, does anyone know of a part number. the switch is so small that I can't find another that will fit in its spot. i ordered a right hand assembly off of a 73 cb350f and it doesn't have a switch because its hydraulic. any advise it considered helpful, thanks...s