Hi, I'm new here and seeking advice. i have asked on other forums but no one can help. I own a 53 Ford Focus ebony that has parking sensors as standard. However, one of mine has been ripped off so I am left with a black wire (with three wires inside) and a hole of around 30mm. I need to get a replacement sensor but on ebay they are all 21mm and Im dreading going into ford. Anyone know where i can get one/how much and also where the parking sensor control box is located?

Answers will be much appreciated.