Step 1: Remove the side caps Step 2: Remove the cover above the foot space on the passenger side Step 3: Remove the original wire and install the HUD adapter Step 4: Assemble your HUD Step 5: Remove your OEM Dashboard cover Step 6: Plug your HUD and arrange the wiring Step 7: Assemble your HUD to your dashboard Differences between 2021 Model 3 / Y installation and older models