How to block G37xs dash sunload sensor?

[sgmidf]

I'd like to change the headlight sensitivity on my 2010 G37xs so that they come on earlier at dusk and go off later at dawn. I realize that it's the sunload sensor on the dash that controls this and I'd like to block this to fool it into thinking there's less light. I'm reluctant to glue anything on it as the dash gets pretty hot in the sun and I don't want glue everywhere. Has anyone figured out a slick way to do this?
Thanks

[joe603]

You can set the off delay, but I don't think you can adjust the optical sensor. Feel free to look through the FSM (link in my sig).

The section is "EXL"