if your afraid of messing anything up ask a audio shop to help and see how much it is to do cause some times those are annoying to put in if you don't know what your doing! but its just like black friday said thats how you hook it up!

If your lucky youll find a shop like the one here in the city i live in, he specializes in factory looking systems... adapters like those in stock and mates them with aftermarket harnesses to run it from the radio without damaging the stock harness in any way if you want to go back to stock. Not too expensive that way either... but that could differ on a shop in your area... but ask them before you order one and find out you didnt have to

some amps have high level inputs too. then you wont need a converter at all