2012 Chrysler 300 - No high beams

I purchased this car a few years ago and didn't realize the high beams didn't
work until weeks later as I live in the city and seldom use them. The previous
owner "upgraded" the headlights with some blue-ish white light-producing
bulbs and they had a small rectangular box in their wiring that gets tucked
into the headlight assembly. I removed the aftermarket parts all the way back
to the factory wiring harness and purchased new bulbs on Amazon by using
my year/make/model but when I tried to install them I discovered the plug
end as well as the headlight assembly socket was different. I confirmed that
they were supposed to be the correct bulbs for this car (bulb H11) but
shrugged it off as a minor setback and went down to the auto parts store and
picked up some new ones that fit correctly. The low beams seem to work fine
but there are still no high beams, even though the indicator light is
illuminated in the cluster.

I've checked for fuses and relays but there is nothing labeled for headlights
in either the front or rear fuse boxes. I'm suspicious that the bulbs I bought
locally may not be correct even though they fit the harness connector as well
as the assembly socket, and I'm not sure that the harness is actually original
to the car either. I don't know enough about how different bulb types work,
such as voltage or frequency requirements, to be able to rule out if I just
have the wrong type of bulb. I'm not sure if the high/low beam function within
the bulb is supposed to be split between 2 separate circuits or if there is a
voltage change to increase/decrease brightness as I see there is only one
filament inside the light bulb itself. Any ideas on what is going on here?