94 Mercury Villager Wiring
 

I am wondering if anyone knows what the 3 plugs (wiring) under the manifold on a 94 Mercury Villager are called? A squirrel chewed through one of the wires and a friend attempted to solder it, but it has come loose again and the car is running really rough. I am thinking I may have to replace it but I don't know what it is. Any help would be greatly appreciated.