Exactly as daddy puta taught them over the years.

Tips: Depending on local laws, 3M UV blocking film, not tinted. It deflects most of the UV radiation (this is better than those reflecting window blockers you see in parked cars, those actually heat up the interior as the air gap makes the air circulate between the glass and the foil).
White fluffy towel like surface on the dash. This stops the light bouncing into the windshield and then into the car.
White steering cover. And break the kitty and pay for a white wrap for the car. In the coming cars, any other color option will not make sense anyways.

Pretty sure they don't really care. They're there to steal, not have moral quandaries.

Is there any brand and/or sticker (or embossed voltage information) on this lamp? Anything to ident it? Because i've found similar ones, but they're modernized, using USB ports rather than the old barrel plug. The information found on that sticker or any information, really is more valuable than the picture, because we can probably guess exactly what you need to buy down to the voltage.