All you need is alu tape, scissor and philips screwdriver
You have more place to play with the tape if you remove the bulb holder.
It makes no sense to cover the bottom, since it is shaded by the bulb holder
Guess, which side is modified?
Visit below link for a short vid about signal lamps in action: http://www.youtube.com/watch?v=FuIg6fiFXVk
