Thank you for the response. At the risk of opening a can of worm I disagree with your reasoning on the removal of the red wire. If you open up and look at the circut board, all of the black pins are connected, and all of the red pins are connected. What this means is that the everything is in parallel. If you take two batteries and connect them the same way red to red and black to black you don't get double the voltage.
Granted I am no electronics expert, but my gut is telling me it has something to do with electronic noise feed back.