What wiring harness will work with my 05 Colorado?

I just got an 05 Chevy Colorado Crew Cab and I want to put my headunit into this car. I have an Alpine CDA-9884. The wiring harness that crutchfield recommends includes the chime and is $80. I dont care about the chime and I just want to buy the cheapest one that is compatible with my car. Can someone send me a link to an adapter that will work fine? Preferably one with an actual store that I could buy it in instead of ordering online. Thanks!