Thanks a lot for the input and especially the video!! This will save me some unnecessary trial-and-error.
I need to take care of the opposite problem, i.e. my headlights are set too low and on unlit roads I feel like I can only see the 10 feet immediately in front of the truck...
'14 Grand Cherokee SRT - Granite gray
'07 Grand Cherokee SRT8 (sold)
'72 Steyr-Puch Pinzgauer 710M