How do I tell which wire is positive and which is negative?
I have to connect a ac adapter to a battery operated game system. I have an adapter that is the right voltage (6v) and I know I will have to cut off the end of the adapter power cord and splice/connect the wires to the game, but I don't know how to tell which of the two wires coming from the adapter is positive and which is negative.
How do I test this? Both wires will be black so color coding is out obviously.
I have to connect a ac adapter to a battery operated game system. I have an adapter that is the right voltage (6v) and I know I will have to cut off the end of the adapter power cord and splice/connect the wires to the game, but I don't know how to tell which of the two wires coming from the adapter is positive and which is negative.
How do I test this? Both wires will be black so color coding is out obviously.
