Do NOT open Louis's link - his "answer" leads to either a dead end or to a website with a virus. The installation of audio equipment in a car is time consuming but not rocket science. If you have an instruction booklet or sheet which tells you where the various wires have to be connected, then it's just a matter of deciding where to put each component, mounting it securely, and running the wires underneath the carpeting or doorframe mouldings. Be careful doing this, so that when you re-attach the moulding it won't bite into the wires. Before you start, make some notes as to wiring colors so you don't make any mistakes with the connections. If you put speakers in the doors, make sure there's no risk of the back of the speakers getting wet from rainwater or washwater going down inside the door. Suggestion: attach a soft plastic shield at the top of the speaker before you mount it, to hang down over the back of the speaker and deflect any water droplets.
