2024 1500 with Headlight Revolution SV.4’s is what I was originally using. For some strange reason the passenger side bulb started being weird.
The bulb would flicker, or illuminate at approximately 1/3rd of the power output. So, changed the bulb. Worked at first, then repeated the symptoms. Put original bulb back in, and replaced the ballast. Same thing.
Removed swapped driver and passenger sides; driver side did not work on passenger side, but passenger side worked on driver side. Weird…
Contacted Headlight Revolution and they suggested a PWM installed between vehicle harness and their kit. No bueno!!!
So, decided to put these bulbs in my fog light location. Been there since 2024 working excellent. None of that weird stuff to date.
Ended up putting Sylvania LED’s in the headlight locations when I did the fogs… they’ve been working.
After some reading figured it may have something to do with the manufacturer’s monitoring the draw from the headlights through the BCM now to prevent us from putting brighter bulbs in. IDK
Anyway… they’ve HR bulbs are awesome. Also, when they did work (that’s the part that baffles me) in the headlight position for approximately 4mos. The Sylvania’s are just as good as the HR’s stuff for a fraction of the cost in my opinion. And they just plug in… no ballast to mess around with.