Review on 💡 2 Pack 31mm 12-SMD 1.25" 12V Festoon Dome Light LED Bulbs w/ STICKER for DE3175 DE3022 DE3021 3175 - White by Wei Fan

Except for receipt of two packs of 2 different from the images; Instead of 4x3 rows they were 3x4 which made them very wide so they didn't fit in my Mazda CX-9 dome light. The thinner 4x3 (pictured) might fit, but at 32mm it's very tight and not sure the bulbs will stay in the rear domes. A slight flickering is observed as the light fades. and in my experience, interior light fading causes LED bulbs to not last long. the time will show. Also, they are advertised as being very bright with cool white (not blue or yellow) light. Finally, they have a polarity offset. So if the bulb isn't working one way, try replacing it. EDIT: I'd also like to add: if you get a wider version you can cut off the extra SMD to make it fit as I went that route. Yes you have three less SMD LEDs but they are still bright (can't tell the difference between the full lot and my modified lot in terms of light output).