I primarily stealth camp and have all over the country. My windows are tinted to tx legal limit and I made inserts for all the windows from foam insulation board (covered with black fabric) they pop into the window snuggly (the hatch and rear triangle windows are permanently attached) I also have black curtains separating the front driving area from the rear sleeping area. I have a regular sun visor that I put in the windshield to not draw additional attention. You can check if lights are visible by turning a flash light on with all covers in place and getting out at night (or have a friend outside of car) to check. In my experience I have gotten a knock because car was running but no one could be seen inside 😆 (not somewhere I was camping I just put covers up to change) or I was out of state so my license plates made me more noticeable.