https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty_Act https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty... from 1975, but is has more of w

https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty_Act https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty... from 1975, but is has more of what you were asking for than you might guess. And it was written about info-tainment systems (radios).