What do you have for stock sound now? If there is a stock amp, then you need an expensive wire harness or do a lot of wiring. Or you will hook it up and nothing will work, I ended up just rewiring the whole car with new speakers.

A good idea would be to go to crutchfield.com and either get it from there or get an idea of what you will need. They have full instructions for every car when buying from them...