Ford Focus Interior Water Leak (boot tailgate spoiler lights) Fix

A quick video showing how I resolved the common problem of a wet interior on a Mk 11 (2nd Gen) Ford Focus Hatchback. Water was dripping from the top of the tailgate onto the parcelshelf and the rear seat. The car is a 2006 Focus. This may not be the recommended way to perform the fix, it's just my way ! Hope some of you find it useful ?