Radio problems
 

Hey guys I need a little help,so I'm trying to install an aftermarket radio to my 2001 S10 Blazer but I'm having trouble with the wiring. I have hooked up all the wiring from a image that I got off of Google but whenever I hook up the ACC red wire to the yellow 12 volt switched wire nothing happens the radio only turns on when I hook the ACC power wire up to the constant 12 volt wire which is orange. does anyone else have this problem?