Balance adapter 3x 2s - 6s?

[lincpimp]

Brian, maybe I have the method a balancer work wrong. On a 2s pack the tap has three wires, one from the main pos, one from the main neg and another wire where the two cells are join, the series connection. Since the balancer has to read and compare voltage it would have to treat the red wire as the positive for the first cell and the middle wire as the negative for the first cell. Now for the 2nd cell the middle wire is read as the pos and the main neg wire read as the neg for the 2nd cell. If that is incorrect does the balancer read the first cell voltage of the red and middle black and then read the tolal voltage using the red and main black and subtract the voltage from the first cell reading to determine balance? Not sure if that makes any sense. I always ceck balance manually with a voltmeter by Checking the individual cells thru the balance connector by isolating the cells.