Been done before lots of times... there was an official how to writeup a long time ago. I can't find it, so its likely been lost along the way.

This is a nice mod, I have done this myself. Good pics and information, thanks for doing it!

ONLY 1 THING TO ADD!!! You need to include information regarding the optional ribbon cable that was used in radios. My 7-way EQ Radio in my 99 looks just like yours except I had to splice into a ribbon cable, not easy wires like yours was. Makes it a PITA. Still similar setup, but some people would likely be commenting and questioning where to splice when that connector doesn't exist in theirs.