not to sound like a smart ass but are u checking the 12+ acc while the key is on? If so does it still not have power? Also have you check the fuse on the back of the stereo. Some headunits have them. (i know my old awia had a fuse right above where the harness plugs in)

 

never trust a fuse!!
with the birth of my new baby, the car has been on the back burner... thankfully i did find the problem - in the fuse box fuse!! ever checked something a million times and still be wrong? well, the simple stuff is easy to fix. stereo in, i'm a happy man. thanks for your help guys.

cheers.