Ok I'll try to explain what the problem is:
I had a pioneer headunit in my setup and I wasn't getting a signal to my brand new Rockford Fosgate amplifier. The power light was on, the amp was receiving 2 ohms, and no signal. I checked with another amp I had, nothing, switched RCAs, checked remote wires, fuses, everything I could think of, no help. Everything was fine, so I thought it was an internal problem in my headunit, because it was in there when I bought the car, and who knows who did it. So I ordered a new headunit, a Kenwood, and I just finished redoing all the wiring behind the headunit and did everything correctly. I hooked everything up again, and still no signal. I went all through the manuals to the amp and headunit and everything is how it should be. I basically re-did my whole system and it still does not work. I'm getting power to the amp, good fuses, good ground, good power. Headunit subwoofer setting is ON, all correct settings. I just can't seem to find out what is wrong. What do you guys think?