according to the rectangle in the bottom left of the diagram, that's inside the box
let me take the cover off mine and I'll see if I can confirm
<edit: That is the way the connector would look if you have the cover off and are looking from the level pots across the circuit board to the back side of the power connector. It should have a red wire connected to it. Counter clockwise from the 6 oclock position, red(4), blue(3), yellow(2), black(1). >