Yesterday, I managed to acquire service manuals and wiring diagrams for the S and X. I don't want to reveal the sources publically but they are the real deal. They have very helpful illustrations and photos. The wiring diagrams also provide information that is very valuable as we try to simplify intallation steps and reduce installation costs for the lighted rear appliqués for Model S and soon to come Model X. Cost was also low: $50 for the X and $150 for the S.