I assume you are going to tape your taillight and don't want the heat from the bulbs to melt the tape glue onto the lens. My old CBR has a connector for the rear bulbs under the rear cowling, back behind the seat. Find yours and disconnect it. Do the same with the headlight.
As for draining the fluid, mine has to have the radiator cap removed and the lower bolt from the water pump. When the lower water pump bolt is removed, fluid shoots out over three feet, getting all over your garage, on your service manual and on your tools. But all the Honda's are different. I know the early CBR 600's had drain plugs on the front of the cylinder block. Why not visit your friendly Honda service reps and ask them. Maybe they'll want to sponsor you.