confused

I have a 340 Watt 2/1 channel amp hooked up to 2 12" subs. I am going from Stock radio with a LOC to the amp. I decided because power and ground were easily accessed in the dash to put the LOC there. Spliced into the harness for the speakers. Ran the AV cables back to the amp. Here's my issue...

I have a 2001 GMC Jimmy, I recently had an issue where the CD drive in the stereo shorted out the L&R channels. Which killed the Factory amp, I replaced the factory amp with the exact same model number. I still have no sound. I have tested the wires from the stereo to the amp, audio travels to...

Ok so I'm new here and I'm frustrated and very confused. A car audio shop which I won't mention talked me into buying most of this mess. I have a Pioneer 8400 head unit, audio control 3.2, the mid's and high's and good, it's the other stuff that I'm mad about. I have 1 kinetik 1800, 1 xs power...