A few months back I removed the unit, cleaned the breather filters, put silicone sealant around the seam between clear and black plastic, put it on a hot radiator and blew air from an electric airbed inflator through it to dry it out. Now the condensation is back worse than ever...... Where is it getting in? There is some kind of plug on the back which I couldn't figure out how to undo so that can be sealed for a start but anything else? the other side is condensation free. 2012 TDV8 Vogue (L322)

Have you re-checked your join reseal? I used glue rather than sealant because the clear was coming adrift right along the inside edge.

Will check when I take it off again to dry it out 2012 TDV8 Vogue (L322)

Hi, I've had lots of help from others on this site so I thought I would share my blunder which hopefully will prevent you from making the same mistake. I had condensation in the back lights and I used methylated spirit on the lens after drilling a small hole in the bottom of the light unit and the light cracked - oops. Good luck with your fix.