I replaced my exhaust this week ('04 STi) and while I was working on it, I noticed that the DCCD plug that screws into the rear diff was broken. The plastic plug was broken off where it screws into the diff and just held on by the metal connectors. I want to replace this, but talking to the parts guy at the dealer things just don't make sense. He said the plug is only a plug with no wiring attached, but when I looked at it, it appears to be a plug with attached wiring that runs up front to the switch. Does anybody have any experience with this plug? Is the plug and wiring all one piece, or separate? Is it above or below the fluid level in the diff? In the stock WRX, the plug is just a plug where you fill the diff, but where is the fill point on the STi?