Mods made by P.O. What do I have with this engine bay harness?

Since you are not trying to make everything original, that will work, but as said.. Your regulator may not have been there. Also, your start relay may have been elsewhere, ( below the flange of the cowl I believe) Just curious, What is the build date on your car (driver door sticker)? I have been trying to figure out when they changed the bumpers. You had absorbers on back, but not front, correct? Did yours have the large square looking gaurds front and back?
I'll look for build date sticker.
Mine had bumper shocks only in the rear and the bumper guards in front and back.