on the nbs's typically people will mount the fuse to the side of the main fuse box, then route your power wire thru the firewall next to where the main wire harness feeds thru, then run the power wire & amp turn on wire down the drivers side under the kick panels, then make your ground in the back, typically the metal tiedown loops that are bolted to the frame in the back are easy to connect a ground to. then run shielded rca cables down the passenger side, (keep the amp power wires and rca cables separated) reason being the power wire will create interference with the rca audio cables and make a ground feedback and you will end up with a buzzing noise or alternator noise.