Fuel level sender unit

[Daz fitz]

Hi all,

I'm trying to fit a fuel level sender to my 2008 diesel 2.0lt A4 Avant ,now I've watched countless vids on YouTube about it ,but when I come to replace mine there's a metal (tin plate) where the the unit should be ,am I being stupid or do I have to remove the plate somehow? 

Any advice would be most helpful.

Looked under both covers .

Cheers

Daz.

[Magnet]

Hello Darrell,

Sender unit part of the in-tank pump on your car? 
Kind regards,

Gareth.