1999 outback guage problems

[mrquad1]

brief description of problems,upon turning ign. key on tack,speedos,oil press,watertemp guages buzz and make hand sweeps.volt meter inop.after 10 seconds oil pressure guage reads 80 psi engine off.upon starting engine water temp does not read,oil press still 80,tack very erratic,no volt meter.during operation under way speedos never work.would like some trouble shooting advise as i am not familiar with this guage system thanks

[DOCDRS]

sounds like your mdc may be kaput. were the 2 speedo pick ups removed from it during winterization? remove the unit and shake it , if your hear water in it it is toast