my Marshall 2555, I have to change the voltage and the ohm rotory switches, now the one's in the aamp are an 8pin with a jumper going from the #3pin to the #6pin, but the new replacement switches are a 6 pin with what i assume is a ground pin in the middle, so my question is do i run the jumper from the #3 to the middle pin. pictures would be nice since i can't seem to find any information at all on the net,or u-tube. I would hate to do a trial and error wiring thing.

                                                                                                             Mike.     gitrplyr57@comcast.net