Dimmers are the way to go, I have been trying to get my dad to put some dimmers in, but he won't. Get the exact light output needed, however it changes the frequency, and gives off a buzzing noise sometimes. I know I saw somewhere an incandesent bulb that is good for like 40,000 hours, I might give those a try someday...

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2018 Subaru Crosstrek (Mine)
2019 Subaru Outback (Wife's)
1979 300CD (sold)