just returned from a week riding blue ridge/smokies on my 2018 heritage 114. yesterday, while riding Ga mountains, the display went dim several times. If i bent down and looked closely, I could see time, rpm, etc and all the other functions. when I switched functions, it worked, but the display was really dim. it started working again on it's own. any ideas?

 

Is it possible there is a photocell that dims the display in bright light (sunlight)?