ColorMFA

Does anybody uses these signals?More info needed.

Sure. Newer cars automaticaly swith on warning lights (turning lights on both sides), at emergency braking.
ColorMFA put signal on this output if strong deceleration ( more than 0,6 g) is detected. Difference between both modes is continous or blinking output. So you can use a relay to trigger in car built blinking switch, or use relay direct connected to turn lights.
This fuction works excellent...

Thank you for the reply, but I need more info - what is the signal: ground or +12V? Do you have any wiring diagram for connecting this signal to the existing Hazzard button?

Outputs in ColorMFA are ground when active. I made a small circuitry with relay and two inputs - one for emergency braking and second for reverse gear (which signal is + 12V) - both switches warning lights on via built in hazzard switch.
Here is schematics. Transistor must be PNP, BD140 for example. I used universal 1 A diodes - 1N4004 for example.
In Passat b5 relay is paralel connected to hazard switch pins 1,2,3.

Thank you again. This is very helpful.

One more question - when the signal dissappears? When release the brake pedal or after some time after wheacle stops, or i need to stop it via hazzard switch manually?

As I tested signal automaticaly stops few seconds after deceleration stops.