I was moving my stereo and the plug wouldn't fit in the box so I was going to take it off. When I opened it I discovered the 3 pin plug was just a casing and inside was a 2 pin plug clipped into 2 little clips. So it was really easy BUT now I want to put it back together...does it matter which pin goes in which clip? On the 2 pin plug there is an N and a D and on the 3 pin there is an N and a L so I am guessing that the N goes in the N? Would like some re-assurance as I would hate to blow it up!