911 992 US -> EU conversion

[Ghages]

Hi,

I have imported a car form US into EU.
I changed the rear lights to ECE version.
Now both the red and the amber lights are blinking, and lights up if I brake.

I need to change this EU standards, which means just the amber part is blinking, and only the red part lights up when braking.
Can someone help me with this?
I have piwis.

thx, G