*disclaimer: I dont know much about this stuff so be gentle*
Head unit has power - no sound? It shows on the head unit the sound is bouncing as if it were playing, but no sound out of any speaker. Heres my problem solving so far:

I checked my head unit - everything is connected behind it, but Im not sure what it was supposed to look like before.

The battery had two wires on the + for the sound system, I disconnected those and put them aside for now.

I checked the trunk, multiple wires back there left out from previous aftermarket sound system. Problem, I dont know how the subwoofer was supposed to be hooked up, does anyone have a pic of the stock subwoofer connections??? PLEASE! If you have one take a pic?? PLease I would appreciate it greatly I cant seem to find a pic on google.


This:
I dont know which one of the factory wires I put where, the aftermarket ones dont go to anything they were hanging with the others in the trunk removed from whatever.

the factory amp is still in the trunk and seems to be connected still.

 

A pic of how the wiring for the HU is connected, was a wiring harness adapter used or was the stock radio plug cut off and the Alpine "hard wired" to the radio harness.

Also Alpine CDA-????