How do you like the GP's when you turn on your headlights? Perhaps it doesn't happen with the 7500, but there were a few threads with the 8500 that seemed to dim and turn yellow when the headlights were on.

Also, where did you purchase the 7500?
Thanks!

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2015--F15 X535i; 2015--F82 ///M4 [ED 6/26/14]; 2015--V60 Polestar (#62:80)*; 2012--E92 335is*; 2011--E70 X5d; 2011--E89 Z435is*;2009--E89 Z435i*;
2008--E92 335i [ED 2/23/08]*;2007--MkV GTI*; 2006--E90 330i*; 2005--E83 X3*; 2004--E83 X3*; 2003--E46 325Ci* *retired