Radio

I am having a problem with my 2002 Pontiac Bonneville

Issue:
* Whenever i open my car door my radio sometimes does not shut off!

Info:
*After market radio installed with wiring Harness kit!
*Also all of my other power fuctions do cut off only radio continues to play

Please help if you can this is Killing my Battery!

Obviously, the harness is not hooked up right.....need wiring diagrams....