Switch the knob on the relay to change the speed (frequency) of flashing.
Sale Unit
1 Relay = 1 quantity
Feature
To solve the hyper flashing from the LED turn signal bulbs.
Fitment
It is suitable for many models, you may refer to:
Mazda MPV [2003-2006] Mazda 3 Mazda 6 Ford TIERRA
or other make and model that correctly fit 7 pin (If you are not sure about compatibility, please contact us.).
Note
Due to lower power consumption of LED bulb, it is more possible for it to hyper flash. The relay is a junction between power and bulb for eliminating hyper flash.
If your car issues the error noise, you will need a decoder.