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#31
As far as the jumpers go, your connecting the center pin with one of the two outside pins. You jumper pins 1 & 2 or 2 & 3. The little plastic jumper will only fit on two adjacent pins. Just don't leave it off, not connected. Or only connected to one pin. And only touch that one jumper. Just take not of what pins its on now so you can put it back the way it was if it doesn't do what you want. I would also switch off the power supply and or unplug it from the wall outlet while you do it. Just to be safe.