Ooooh, I think I got you.
So, tell me if Im right.
The little light in the headlight comes on when you put your parking lights on, but is white. Like a driving light.
The side marker only acts as a turn signal.
The front bumper light only acts as a turn signal.
If thats correct and you want the bumper light to be a parking light, the only thing youd need to do is tap into the run a wire down from the small bulb in the headlight to the bumper light. Since your bumper light acts as a turn signal, i would assume that it is already a 4157NA bulb and just need the other lead to trigger the other filament inside. If that is the case, all you really need to do is pick up 4157 socket that has the three wires (park/signal/ground) and then just wire it up.
Unless, your socket looks like this: (from arabas' thread)
And then those three wires goes to the connector with the two foglight wires attached to the back of the parking light/fog housing. From there, you are missing the brown wire comming out the other side that would lead into the harness going into the vehicle main harness. If thats really the case, you just need to tap into the small bulb in the headlight (the one that isnt the black wire of the two) then run a wire from there to the brown wire comming out of the socket.