what is this?
 

Hello guys,
I bought a 2004 Disco Westminster edition with electrical problems. I removed the power steering bracket and I found a wire thats been frayed and it making a short to ground. The wire runs to this sensor. Its on the drivers side right next to a freeze plug. Any help would be much appreciated.

bit blurred but looks like a knock sensor

^ What Dusty said.

Knock knock

That there, is knock sensor if I have ever seen one.