Hi
i have a x250 XF and having issues with no audio and reversing cameras working when they want, just recently changed the fibre optic cable in the boot loom but this has not cured the problem at my wits end now on what to do, noticed 2 electrical boxes in the boot on the left side as you open the trunk, one of which when I take the optical cable out it is blinking a red light, please if someone could identify what these boxes are and there functions please