Wiring a Blazer for Towing

Just acquired a 2001 Blazer and would like to get a wiring harness for trailer lights installed. Where is the best location to tap into the existing wiring and how do I access it?
Also, it's a 6 pin set up so any tips from GM/Chevy veterans about wire color, etc. would be appreciated.
Thanks!
Mark '01 Blazer
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this might help with your blazers wiring colors. http://www.etrailer.com/faq/wiring.aspx
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Go to any autoparts and buy the correct trailer plug adapter. No cutting and splicing needed that way.
Bubba

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