Got a loose connecter and can't see where its supposed to go if anywhere. Its below and to the back of the water expansion tank. The connecter is white with a brown and white lead going into it. The lead is only short so something would have to come to it.
Its on an 8v PB Gti engine....
Any ideas?

? Only thing wrong with the car is a funny idle on start up otherwise all is fine......
Cheers