They were installed in a Fiat Panda 2021 PYD1B Mild Hybrid. I got tired of changing the regular bulbs every 3 months and wanted LEDs. After searching on Italian websites like essele parts, etc., I saw from photos that they sell these bulbs just with their own private label. So I thought I’d buy them to try them out. There is no triangle warning light on the dashboard, which means the can bus works fine. If you watch YouTube videos on how to do it yourself, it’s easy.
Also, if you turn on the headlights at night or the fog lights, the LED daytime running lights still work. The regular bulbs had 2 filaments, meaning they had 2 resistors. So, at night, one resistor would turn off and you’d have normal headlights plus dimmed daytime running lights. During the day, both resistors were on. That’s why, combined with the heat in Greece and because they are daytime running lights and you can’t turn them off, these bulbs burn out all the time. The solution to give yourself peace of mind is to install LEDs. They don’t blind other drivers because they are very, very low