The clock in my XR7 isn't working. I sent it to RCC to get it checked out but there's also a wire that's not connected to anything. If you look at the picture,, there's the plug that goes onto the threaded stud in the middle, and the black wire with the electrical connector that goes on the connector on the clock. I also have a black wire that is stripped on the end but not attached to anything (second wire from the left). Is this a ground wire or should it be connected somewhere else? Thanks for the help!