When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
There is an up down switch to the left of the steering column on the dash.
I always turn it down to minimum as tend to drive out of town where only lights one sees is on coming traffic. I find the less light in the cab the easier it is to see wild life or native people walking on the shoulder.
Yes, i have to have mine down when driving back roads or it will give me a headache from the brightness. The up and down buttons are on the right hand side of your headlight selector switch.
I think the dimmer switch you guys are describing is for the instrument panel only. On your Sync screen, there is a separate option for dimming the image, I set mine to auto and seems to work fine, it gets pretty dark.
Mine goes to a dark (black) background when the lights come on. It works great. I don't mess with the dimmer, doesn't seem like I have to.
The highlighted part above is key. I was freaking out wondering why my screen wasn't dimming. It was quite bright and it was distracting. I finally figured out my headlights weren't on. Sometimes I do the dumbest things.