Great quality, but not ideal for LED turn signals
These US blinker modules are generally fantastic and fulfill their purpose really well. The overall build quality and function are solid, and they do exactly what they are supposed to do.
However, I want to share a note of caution if you plan to use them with LED turn signals:
In my case, the 40% dimming for the standard position light mode is almost as bright as the actual flashing/blinking. Because LEDs respond differently to the reduced voltage compared to traditional incandescent bulbs, the contrast between the dimmed position light and the active turn signal is barely noticeable.
For standard bulbs: Absolute 5/5 stars, they work like a charm.
For LED bulbs: Keep in mind that you might lose the distinct visual difference between the position light and the blinking function due to how LEDs handle the 40% dimming.