Scrap addict, I suggest you get down even with the plug hole and take a photo. If you flash does not illuminate the hole, then, shine a flash light in there to take the photo. It appears to me that it has three pins in a row and are in a straight line, but need a better photo to be sure. I don't have one like that, but all us us sewing machine junkies have extra parts, so a better photo might help you.
bkay