Adding a DIN sized DVD/SVCD/MP3/CD Player. Power wiring how?

Alright, I got myself this awesome single DIN sized DVD/SVCD/MP3/CD Player and it came with a power cord to install in the car. It says it needs 12V. What do I connect the red and black wires to? Please do not skimp on details here. I've looked everywhere online and cannot find an article about installing an extra DIN sized device. I'm so confused!

I've never really messed with wiring before so I need some good advice. Thank you all so much!