[hugo325]

I ordered all the material to make the assembly.
However, I have a technical question.
In the BMW installation guide it says :

"Only cars wihtout the High fuse box already installed at the rear.
If the contacts on PIN4 and PIN5 of plug Z2*9B are missing, the rear fuse holder must be replaced and additional cable V connected."

My question is simple, how do I know if I need to wire the "V" cable?
For information, I don't have the default connector Z2*9B in my rear fuse box..