ROUTING WIRES BACK TO AMP:
When the speakers and subwoofer are in place, route the wires back to the amp. For the front speakers, run the wires on the same side as the signal cables and turn-on lead that you ran earlier. Make sure to hide the wires for the rear speakers somewhere in the trunk as they’re the only components that are wired by themselves.
For Primary wire, speaker wire and more go to: