That pic is different than mine. Mine has a internal spring clip holding something on both sides. One passageway under the front crank seal area with a clip holding a cap on the right side (looking at the cover, left side of the truck/motor)
The other passage is on the left side (looking at the cover, right side of the truck/motor) and is above the before mentioned one and leads into the side of the oil pump area.
I'll see about a pic post....