Here is where I started with the circuitry. Since I am using the OEM dash, I needed a section of the dash for the LED's, buttons and connectors for the HVAC controls. All of those will be wired to the metra kit's circuit board used for the brains. Keep in mind this was the donor extra board that came with the bezel I bought on ebay. The original is untouched.
Next, onto the wiring. I could have eliminated a few wires since they are common connections for example the LEDs, but redundant is ok. You can also see my hack screen brackets using the existing threaded inserts in the bezel.
The Metra electronics board was later screwed to my hack job brackets, floating over the back of the screen.