So, here is the wiring for the MyLink all setup. You'll notice I had to grind out part of the back support so the Blue GPS cable would fit (per instructions). Also, I added tape to the metal support in order to prevent the wires from 'chaffing' when being pulled on -- that thing is SHARP.
Also, the MyLink I have does not have the upper supports so I used some thermal bubble wrap I had to prevent 'noise' from vibrations.
Once I get the connector pins for the OnStar J2 connector, I'll put on the face and do a test run. Once I'm sure things are good, I'll button things up (always check before you bolt things up -- ;o). After that, time for the Heads, Cam, and LSA Supercharger!
-Don