[u][/u]

I just read through this thread
None of it is good advice .

If the house is pre 70s this could get more difficult for a number of possible reasons .

Save yourself some aggravation and call a professional.

If it’s post 70s with a non metallic wiring system (Romex)) then the simplest way is replace each outlet that is required to be protected with a gfi receptacle . All terminations will be on line side of the device . They all should be tamper resistant as well as weather resistant for the exterior.