I sorry I can't comment on your problem, but turning the lights down at night is a good way to help your night adaptation and vision outside of the vehicle on dark roads.

This is the same thing that we do in aviation at night with cockpit lighting during more critical phases of flight.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record