How To Install A Car Amplifier
You could always take your car to some expensive shop and have them install your car amplifier
The first thing you need to do is to decide just where exactly you are going to have the new amp. If there is going to be a subwoofer then it is probably a good idea to keep the amp attached to or next to the enclosure of the subwoofer. If you are simply using the main car speakers then you will want to just place the amp under the passenger's seat so that it is out of the way.
The next thing to do is to make sure that you are purchasing everything that you need to get the job done. You will need about three feet of ground cable, an RCA signal cable, a power cable, a remote on wire, and speaker wire. Make sure that you have all of the essential tools on hand as well such as wire cutters, wire strippers, screwdrivers, pliers, sandpaper, a pen, masking tape, and a 2 crimp-on o-ring ends.
Once you are ready to go you will need to disconnect the ground cable from the battery. Go ahead and connect the positive fuse cable to the positive terminal of the car battery and put the fuse in the fuse holder. Now run the power cable through your car via the firewall all the way to your amp. Look around for a metal screw or bolt on your car metal to connect the ground cable. Make sure it is close to the amp and no further away than three feet.
Now remove your head unit and run the remote and the signal on wires from the head to the amp and connect it with the RCA connectors. Make sure that everything is connected firmly to the amp and make sure that you are not left with any exposed wire hanging out anywhere. It is also important to make sure that you are securing your amp to something so that it is not bouncing around under the seat as you drive around. Put everything back to together and reconnect the cables to your battery and you should be good to go.