how to hook up vintage alpine equipment?

I have an old Alpine 3512 amplifier that I used years ago. It's not been used for awhile. Anyway, I recently acquired a 3317 equalizer, 1341 tuner, and 5950 CD controller and thought I'd like to give this stuff a listen. One problem, though: How do I hook this stuff up? There are several cables hanging off the back of these units, but not all are labeled, so I don't know what goes where. Regarding power, I'm guessing red will be switched positive, yellow is unswitched positive, and black is ground. What about blue and gray? Thanks for any help you can give me.