Long story short I've had 3 Grand Prixs in my life and have added a HUD to each of them. The last 2 were pre-wired and all I had to do is get the components. I now have a 2017 Envision that doesn't currently have a HUD. Does anyone know if the wiring harness/connectors for the HUD and the HUD controls are present under the trim? If so it'll be an easy upgrade. Thanks!