| Does anyone have the pinouts for a VAX-4000 console jack - its sort of like
| an RJ-45, but you hav eto hack the top off to make it go in...

It is called a DEC MMJ connector I believe.  Here
is the pin-out I believe I used to make my cables:

 DEC MMJ       pin #           Signal
                1               DTR
                2               TXD+
                3               TXD-
                4               RXD-
                5               RXD+
                6               DSR

 Apparently the DEC MMJ connector is RS423 based.

 From what I can tell, this is a suggested MMJ to DB25 (RS232) layout

        MMJ pin #               DB-25 pin #

        1 (DTR)                  8 (DCD)
        2 (TXD+)                 3 (RD)
        3 (TXD-)                 7 (SGRND)
        4 (RXD-)                 7 (SGRND)
        5 (RXD+)                 2 (TD)
        6 (DSR)                 20 (DTR)

Cheers,

-- Ken