Funny story: We couldn’t see ours either after buying ur 2012 Phaeton 36 QSB Dec 2021 which was scary when I (newbie) was trying to learn how to drive it. After my husband drove us back to NE from FL (where we bought it) and asked our local Freightliner mechanic for a fix. He told us to turn our headlights on and low and behold we could see the gauges.
That said I love the solutions suggested
. Maybe Gary had less problem seeing it due to the height thing.