What is this plug??

[AJFisher]

Hi guys, wondering if anyone can identify this plug for me? What should it do and where should it connect too!

Also can anyone tell me where abouts the three relays bolt too? And also how the UCH is held up? Pics would be great

 

[AJFisher]

Anyone have any ideas?

 

[lemonnobby]

That plug is for a automatic so don't work.
Uch is held up by 2 clip things a t20 screw and a 13mm bolt with a bracket underneath
if you pop the fuse box out a bit you will see.