Which wire is which?
Ok, I have this solar panel I was given, and a knex motor without a battery box, and In need to test which wire is positive and which is negative on the solar panel. I am no good at electronics, though I have done soldering before. I was wondering, how do I test to see which is positive an which is negative on the panel? I hope to join it to the motor to have a very powerful, eco-friendly solar model.