I have the component speaker, speaker bracket, amp w/o mounting plate, and part of the wiring harness w/all the connectors. The harness that goes to the sub is cut at about 3'. The amplifier harness is cut at about 3' as well.
The amp harness has 4 matching wires for the amp, two larger gauge wires that look like ground and power wired and two wires that match my factory speaker harness for the middle rear deck speaker.

Can I just add this to my factory system with the BA 368 watt amp Mygig system? It looks like I can splice into my center channel rear speaker and add the power to the amp and be done with this?

Should I be concerned with anything else?