Originally posted by khyber
Anyone know polarity of this cable ? I presume black should be comm and black with white lining should be +, errrrr but then again , who knows.... Guys please help 
If I had a doubt like that, I'll just connect my charger (KO BX213) to the wires which is connected to the Tx pack. If the KO charger shows zero volts, then it's reversed. If it shows some voltage, then you're on the correct polarity. I think if your charger is a decent one, it should be able to detect the reverse polarity.