Ok it has been brought to my attention people are curious what the little plastic peice was for on Brians guitar. He has now replaced it with the BTTL logo, BUT back in 1973, there was a little red 2-way switch for a built in fuzz box!!!!. You can hear this on Great King Rat. He put it in there to give sustain to the notes but after aquiring AC-30's he didnt need it any and didnt really like the sound of fuzz. He did however use it sometimes in the early days but thats about it. I dont know if he still has it in there as to not mess with the circuts or not, but yea thats the story behind it.