Basically my passenger side does this slight dimming in and out ever since I switched from 6000k bulbs to 5000k bulbs. I figured it was due to the 5k being cheap ebay replacements, so I trashed em. Plus they didnt match my led fog bulbs, so it was no biggie.
Now I have 4300k bulbs from a reputable brand, and I noticed the same issue tonight but not as bad as the 5k (u could notice it while driving). This is my first night using them, they're a day old.
So having tried a different brand and kelvin in bulbs, I'm wondering if it's that sides ballast.
The 4300k bulbs I have now are ac and the ballasts are dc I think..I'm not to familiar with all that stuff. But the 6k bulbs I used to use were ac, and I don't recall any issues.
I appreciate any ideas. Gonna try switching out ballasts with a ballast from an old kit in the mean time .