Assuming you're talking about the wire/plug that you can find on just the Pass' side? Nnot sure you should wire both fogs in to just the one wire/plug as you may be overloading the wire/fuse.
All I would say is that, if there's a wire in there for the pass' side, there is surely one tucked away in there for the driv' side. They MAY just wire one side on the rear of the car, for what they call in England "high intensity" rear (fog) lights but never have I seen just one side lit on the front.
Keep looking, it's in there somewhere! Good luck, please let us know how you get on.