POWER
There are a few ways you can wire up the power lead, cars with the quick release clamp will have to be replaced with a clamp with a bolt or even a specific one designed for amps which are widely available from any good ICE store or ebay, cars without the quick release can be wired onto the bolt and tightened up with the bolt, the other way is how i did it and is probablies the most easiest and common way of doing it, i know some people might disagree but ive had a power lead on here for about 3 years
First of all you have to get the lead from car to engine bay, picture of the grommet and informtion can be found here
http://www.saxperience.com/forum/showthread.php?t=62418
You also need a fuse on the lead within about a foot and half of the battery
1) Disconnect the battery
2) Locate the Small fuse box cover
3) Unclip the the cover off and undo the 10mm bolt, the wire is connected to the nut
4) Put the power lead over the bolt and put the wire/nut back and tighten
And thats it
EARTH
Most people use this method, its probablies the easiest way of earthing
1) With the battery disconnected still, lift up the rear seat like this (if you have a solid rear bench flip it up and take out to make it easier)
2) Locate the bracket
3) Undo the 10mm bolt and sound down the paint to bare metal
4) Put on the earth lead and then tighten the bracket back over like this
Last step is to connect everything to the amp, remote wire goes from headunit and is usually a blue wire, and is labeled up or information on which one it is can be found in the manual, now its just a case of connecting the battery back up and adjust settings on amp and headunit to suit your ears