Neither of those diagrams really apply to the switch you have. The diagram showing how to use a 3 prong switch would be better for your situation.
On your switch the 2 prong side is power and ground for the light in the switch. The reason you have the diodes is to keep the nav lights from coming on when you have the anc light on.
On the 3 prong side....
Center post should be 12v feed. the connector with the diodes coning out of it should go on the terminal that has power when the switch is in the nav position. Then one diode should go to the other prong (one with power in the anc position). The other diode will go to the terminal beside it (on 2 post side). The ground wire goes to the other terminal on the 2 post side. Then your bow/dash lights will hook to the terminal that is attached to the connector on the nav side and your anc light will go to the connector on the post that is powered in the anc position.
Hope this helps, I'll try to make diagram for you if needed.