[ICOM] need help on dc jumper plug...ic251a

[yash at aol.com]

Hi
  Just picked up a beautiful ic-251a. powered the rig up.. line 
voltage.. rig doa. downloaded the manual found out the dc input power 
connector needs a jumper in place before the rig will power up on its 
own built in supply. the manual does not give any
  info on which 2 pins need to be jumped,there is no circuit diagram in 
the manual. the dc jack ...molex type connector... has 4 horizontal 
pins, the body of the connector ...looking at the back of the rig..... 
goes to a pointed shape to the right side of the connector.
  I found loads of info on the web about the 251 ....but not a darn 
thing about this simple plug. I suppose I can open the rig and try to 
trace the 4 pins ,just thought this would be a lot easier.
 Any help...would be grateful.
 thanks
  dale wt4t