October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
USB Signals to Human Machine Interface Control Module
WARNING: This page is about a different car, the 2013 Cadillac XTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: USB Signals to Human Machine Interface Control Module Wiring Schematic