installing cd changer

I'm looking into installing a cd changer in my 2001 Blazer and was wondering if anyone knew where the factory wiring for a changer would be.

Thanks
Harry

Unless you had a remote CD player installed before there isn't any jumper harness. Now if you did before there is a empty plug on the back of the radio where the jumper harness plugs in which then runs into your CD changer. Any radio store ought to have these harnesses for sale.