I think he fixed it. But your right, and I think you would agree rrasco, the LED diode is an electronic switch. You apply the voltage on the + side, or consider it an input. The switch closes and the current comes out the negative side - or output. That - side is now the input to the next LED diode on the +side, and hence you repeat . . . In post 32, Im actually surprised the driver didnt get shorted or as you were saying overdriven. Electronics are fun.