Lose wire in boot

I have a problem with my radio ( see previous post ) and have been looking in the boot electrical area and have found a wire unconnected it has a square black plastic end with a pink/ purple tab on it it appears to have a small coaxial connector does anybody know where it should go ? Could save me a small fortune tomorrow at guy salmon !

What model do u have?

Matt

Hi matt it's a 54 plate td6 thanks once again