Having some problems with my PPI amp, hoping someone can help me out. I was driving around a few days ago when the sub stopped working. After I got home I checked the power, ground and remote wires and all were good. When I plug the power/ground plug back into the amp, the power LED that is usually green turns red for a second and then shuts off. Anyone got any suggestions?

 

check resistance of your sub, or disconnect it, and see if the amp LED stays green.

that led is telling you that the amp is in protection, keeping it from killing itself.