MAC-10 connector wires

[piotr@Exabyte.COM]

     Hi everybody!
     I just started looking closely at my MAC-10 unit connector and noticed 
     2 wires which appear to have been cut/disconnected. I currently don't 
     have Bentley manual, so I was wondering if somebody on the list with 
     manual for 86-88 5000TQ could look up what signals these wires carry.
     (Below is rough drawing of connector, with wire positions/color 
     indicated).
     
                                2nd wire from right,top row(brown/white)
                                   |
      |  |----------------------------|
      |--|                            |_______
      |--|                            |-------
      |  |____________________________|
                ^
                |
            6th wire from left, bottom row(brown/blue)
     
     Thank You
     Piotr
     86' 5000CSTQ
     87' 944T