Replaced line for Knock Sensor,is this peice important?

[Metal Links]

When I was replacing the Knock Sensor wire the wire snapped off right behind the plug that goes into this black thing, that looks like a mount. I just stripped the end of the wire and butt jointed both wires together with out the black piece. I am still getting a P0332 even after I fixed the wire. I havn't checked on the butt joints yet but could the black piece be important?

Photo of thingy:
http://imgur.com/0ZkutM5

[BillBoost37]

The blacok piece is a waterproof connector

[BillBoost37]

Ps.. if you ask in chat and a thread... c'mon guy