Installing a Sound System

My friends vehicle was installed before, the old owner is still using cables. He took it off while buying the vehicle. Then, when I bought a friend car, I think it was called a subwoofer. It just needs to be seated on the cables. He asked for 100 lira for the electrician. Can I do it myself or if anyone likes to do this on the European side of Istanbul, can I bring the car to me. Thanks in advance.

Obviously, this is the price that is generally asked for these works, you can do it yourself, if you want to get help from the friend you supply the products you know, he probably knows how to wear it. For someone who knows the job is not very difficult, if the cables are pulled out, the hardest part of the job is to get the power to set these cables, if they are ready, the rest are simple things.

Everything is ready now, there is only the thing of putting the pieces together. My friend doesn't understand much, the room has been built somewhere. Now I get prices from a few places.

It would be useful to have the man do a smart place.

If you have the chassis attached to the system, hold the tape of the car and the tape amp can go away.
If you do not use cables suitable for the system, do not put the necessary parts in the required places, you may be in your vehicle in the future.
If the cables do not pass insulated from the necessary places, you will hear a spinning sound and reach a world.
A small error in connections can burn out the amplifier or tape output

thanks for your attention.