@
steve11 what's your gap like at the top of the lamp? I've got around a 5mm gap.
We had a downpour tonight so I put two rags at the top of the lamp and shut the boot. Outcome was a glass of water from each rag so water will definitely be going down there. The original ones are flush against the bodywork.
I'm going to have another go at them tomorrow and if I can't get them to sit how I think they should....they'll be winging their way back to Germany