Engine Wiring Loom - Help Please

[MarcB]

Was under the bonnet of the trophy tonight and i came across this unknown wire.

Its been taped up and it been hanging down for some time as it was all dirty.

All my lights / fogs / horn and everthing else work so i have no idea what its for. . . .Can someone check there 182 to maybe have a look and help me out with where it goes and what it is for ?

 

[bmh.01]

Acoustic valve, which you appear to be missing and the feed to it from the airbox.

 

[MarcB]

Whats the Acoustic valve and what does it do ?

I know about the airbox feed pipe thats not there and i will sort that as its not a major issue the now, More worried about this wire