My ASEAN Free GPS Map Project

Thanks, But on my Nuvi 610 I have a function that will dim the light at a specific time you set (10 sec to 2mins). Anytime when it want you to make a turn it will light up again. As we know using the car charger will spoil the internal batt.

Hi,
May I know is there a way in the Nuvi 765 that we can switch off the back light to save batt if we are traveling on the highway for a few hours.