Hey /Adv/. A couple months ago I was driving home at around 2

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Hey /Adv/. A couple months ago I was driving home at around 2 am and was pulled over. I received no punishment and i wasn't in violation of any laws and was let go.
My question is, did this officer break any procedure/law? He was heading in the direction i was coming from and made a U turn at the nearby intersection i had just crossed and started following behind me, not on my ass or anything. While we were still moving at 40mph, and without his red and blue lights on to initiate a pull over he shined his spotlight directly into my passenger cabin, temporarily blinding me! It hit me in the eyes from all of my mirrors, and i happened to be glancing at the driver side rear view mirror at the time. I legitimately couldn't see the road. I reacted with my arm to cover my eyes and swerved a bit in that moment. That's when the traditional lights came on and i pulled over. My eyes were still watering from the initial flash of light. I made no complaints of this to him. He was relatively nice and things went well, i was pulled over because he claimed i had my brights on but I didnt. the brights on my vehicle required manual activation through and arm behind the steering wheel that id also use to signal. it must remain held back for the brights to operate. I wasn't doing either of these things. What i did wrong i suppose was that i had lights on that you'd use while driving in the rain, due to the previous day. a
Although their brightness isn't much different than my standard lights. He asked me a couple times if i had drugs or was on any i replied no and nothing was searched. I don't plan to take any serious action but I would like to hear some opinions.