First, to do anyything with your 984-685E you will need some programming software. For the 984 that would be either an old copy of the modsoft software or for windoze, that would be either ProworxNXT or Proworx32. Proworx is an expensive piece of software so unless your source for the 984 had a copy he no longer needs you might be stopped cold in your tracks. There is a thrid party package that programs the 984 but I don't remember what it is. Maybe someone else will. We priced it once and it was also fairly expensive. If you do have the software then all you need is a power cord and a communicaiton cable. There are many things I dont like about Proworx, but its online help is not one of them. It has excellent info on the instruction set.