in my integra i have this setup. Rockford fosgate p5002 amp. Had a jl audio 12 but it broke so i put some generic one in that works just fine. And a pioneer head unit. Well it had kept going in and out of power for awhile and a few weeks ago it just stopped. So i started looking at it, found that the remote wire had came out. So i fixed everything back in. And nothing. The amp has power,i can tell because of the red led lights in the amp that turn on. But these lights usually go with the beat of a song in a blinking motion. They are just red. So my guys is that the amp is not getting an input. I checked all the input wires into the back of the head unit. They seem fine,ive switched them around all over and still nothing. Any ideas

 

oh and by the way its a pioneer DEH-P770MP headunit,if that helps at all

 

Seems like you screwed up big time by switching "them [input wires] around." Input wires would be power, ground, and antenna. If you switched power and ground, say good bye to your headunit.

Back on topic: Does your amp turn on or does it just "have power"?

 

I would check the sub and it's wiring.
Here is a simple test, disconnect the subs speaker lead at the amp, then touch the 2 leads, [pos.(+) and neg.(-)] to a batt., [any batt. will work AAA, AA, C or 9 volt, 9V works the best] 2 leads of sub to the 2 terminals of the batt., the sub should "pop", if you have touched the subs pos. to the batt. pos. and neg. to neg. the sub will "pop" out, rev. them and the sub will "pop" in, if the sub does not "pop" it is N/G or there is a problem with wiring, and tats why there is no sound.

Also if the "on" light was "flashing to the beat of the music" check the amps ground and power connections, it should not flash. 94

 

Make sure the length of your wires are still intact and not frayed from rubbing on parts of the chassis.
if your power is touching the chassis you wont get much of a signal...