SHORT KID
Silver Member
I have found led's to be interesting, in a group they have diodes and are polarity sensitive. You can also get single bulbs and I don't think polarity matters. I have used both types and a lot of cheap ones just use 2 black wires, some also use a white stripe on one wire. There is also led's for AC voltage to use around your house. I have run into frustration with their use on occasions.