Review on 🚗 QHCP Car HUD Safe Drive Display Reflecting Windshield Head Up Display Screen Projector - Perfect Fit for Ford Mustang 2015-2020 by Jhon Clark

Installing this HUD was easy and exactly as advertised. However, no instruction manual is supplied, except for a small card showing how to switch between km/h and mph. The only other item that shows is Temp in Celsius...not sure if it's outside temp or engine temp and can't be changed to F. Double image on the windshield that can be fixed with the plastic element provided but where you have to place in a terrible place and annoying and very difficult to install. That's about 5 mph from the speedometer and GPS NAV speed compared to 75 mph and up. I intend to return unless the seller suggests how to calibrate and eliminate the double image without adding the plastic piece to attach to the windshield which nowhere says it needs it.