Installing aftermarket radio, have questions...

Yes, if we are not set up to regularly do this kind of thing, then take the radio to the car with two jumper wires.If previous post is correct, then with one jumper ground the black wire terminal. Then with a hot jumper then you can touch the yellow wire terminal or the red wire terminal to power up. With one or both of these terminals hot, we should be able to turn on the radio and at least get some lights.