I doubt that you will find a connector. A lot of folks mistake the filler plug for a sensor. If it has actual metallic contacts, then you may be missing the harness. If you don't see metal pins or socket then it's a filler plug.

__________________
Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.