Where does this wire go to that I’m holding I saw it hanging from the front one day and can’t find where it goes ?? Any help would be appreciated 

At a guess it plugs into that female connector just in front of your hand I the picture. 

1 minute ago, skomaz said:

At a guess it plugs into that female connector just in front of your hand I the picture. 

 

That's the headlight, I reckon it's for the front foglight in the bumper...

1 hour ago, skomaz said:

At a guess it plugs into that female connector just in front of your hand I the picture. 

No, Unfortunately that is the wire for the headlight 

1 hour ago, sepulchrave said:

 

That's the headlight, I reckon it's for the front foglight in the bumper...

The fog light wire is below my hand 

Air temperature sensor?

How many pins are in the end...   Its hard to tell number and size from looking at the back of the plug

22 minutes ago, sepulchrave said:

Air temperature sensor?

 

That looks a good shout if two wires and one yellow and blue and one yellow and brown. 

 

The sensor itself is usually plugged into a hole in the grille next to the fog light or nearby

Brown/white and brown/yellow for G17 ambient temp sensor on a 2005 Fabia.

1 hour ago, sepulchrave said:

Air temperature sensor?

No that’s on the other side.

1 hour ago, skomaz said:

How many pins are in the end...   Its hard to tell number and size from looking at the back of the plug

2

The only othe thing I can think of them is the bonnet latch switch if it has one that would indicate the bonnet open for the dash telltale or alarm??  After that I'm struggling unless it's an A/C sensor???

34 minutes ago, skomaz said:

The only othe thing I can think of them is the bonnet latch switch if it has one that would indicate the bonnet open for the dash telltale or alarm??  After that I'm struggling unless it's an A/C sensor???

Good ideas, I need to see another Fabia to follow the wire on it? 

If you look down the back of the slam panel below the latch mechanism you might be ae to see the other end where the connection fits if it is the bonnet latch switch.