plugs
Best way to do this is go to the bone yard and get a harness for a GM Delco radio.AS long as the car is fairly new then a harness should work.I would take my radio just in case to make sure you get the right one.I have seen cars that have different harnesses in them from the factory,but it is rare.Then stop by your local car stereo shop and get a radio adapter harness for your car.All old Gm harnesses are the same grey plug for power and other and black plug for speakers.On this harness the wires will be labeled.Look close at the wire and you will see they are labeled.12v constant,12v switched,power anteana,left front speaker,right rear speaker and so on.The trick is getting a wiring diagram for the new radio plug.Once you get that you are set and it is self explanitory.I would try the car stereo shop.They all have a computer database that shows pinouts and factory colors for wires related to what they are for.If they try to charge you for this print out ,dont pay for it!Go to the next car stereo shop and they will probably be cool about it,most are.If not, I can call the shop I used to work at and get it for you,but try a car stereo shop first.No hassle at all!Hope this helps!