I just don't get it. I tried it on my GL jazz with the diagrams that I found on here, but I get no sound now that I am plugging it in. I thought I wired it right, but I guess not. Here is what I need to find. A schematic with all of the wires in the control plate, and then a close up of the dpdt switch, OR The month/ year issue that Rick Turner did the picture article in BP magizine about this. I own all of them still, so I must still have the article. Any help would make my day.