Chapter 816 is the rules here in Oregon, * additional can be county and city as well.
Unless you really get a weirdo officer, or they are looking for a pretext to initiate a traffic stop nobody really is enforcing these and reality with new technology coming out, these are really behind the curve. If you quiz a officer it's unlikely most know these.
Here's a example, on Buells they run dual headlights, one is low beam and high lights up both. A few people have been pulled over for having a headlight out and officers don't understand it's federally and state legal. I have not been pulled over for it but those I know who did tried to explain, but told the officer " write me a ticket & I'll see you in court!" Each time the cop failed to show & dismissed.
But a popular modification is changing both bulbs to dual filament for better lighting and avoiding ignorance in LEO.
But nowadays, a lot of people are running with out license plates or current, and list of other things and police are so short staffed unless a major crime, nobody's going to pull you over. Last September during fire fighting I was laughing but didn't have time to take a picture but several police cars brand new but. No license plates, been in service 4 months and DMV is so backed up even the cops don't get their stuff in a timely fashion.
A friend at Gresham police said they are so busy with homicides and violence that virtually anything else does not even get a response.