Run the power wire for your amp straight from the battery but make sure you have a inline fuse in the engine compartment for it. Just run the wire thru the firewall on the passenger side should be a hold you can go thru. In regards to a ground you can that straight off the amp to anywhere on the frame as long as its to metal. Also when you are running your rca cables and power cables keep em seperated.. power down the right side rca down the left. That way you keep out interference. ANy other questions just ask.