Rear wash problems the common fault

[kanyewest]

Is that the boot rubber seal As there's a Brand new one on it 3 days ago got it from SEAT plus a new light but still leaked so need to seal as much places around the top hinge area as I can an hope for the best

yeah i was asking about the boot seal. id probably get them to look at it if you cant pin point where the leak is coming from, this sounds fishy