LED-bar installation, bi-xenon, trigger signal

Struggled to find any good answers when trying to install a LED-bar today, Skoda Yeti 2010, bi-xenon. 

After a bit of multimeter testing on a needle pierced into the possible cable, the answer is:

The cable going to pin 8 on the plug on the back of the head lamp gives you the trigger signal. You can´t measure with the plug 

off. It causes fault code within seconds and the trigger signal is turned off before you have time to check.

Connecting your LED-bar this way will not give you CAN bus fault with error signal in the dash board. 

For those of you who already knew, laugh in silence😜