I have taken my 8” uconnect out and installed a 12” uconnect 5. I bought a conversion harness to get all the wires to the right places and I put the obd bypass in the can bar to make the changes in alfaobd. Everything seems kosher. I have control of the climate controls, but can’t get the screen to come on. I have disconnected the battery to reboot everything and have left it to sit in hopes of it learning from the bcm but still no avail. What am I missing?