I have an intermittent fault displayed on the dash telling me that the reverse lights / rear fog lots have a fault but only when the boot is open. My assumption is that one or more of the wires in the wiring loom has broken where it flexes as goes from the main car body into the boot lid. Is this an easy one to fix? I am keen to fix it quite promptly as my assumption is that the boot lock power cable also goes through this same conduit and could fail at any time (knowing my luck, probably when I'm on holiday with a boot full of suitcases!). Any thoughts or any similar experiences?