Thanks OregonLC, I should have asked earlier.
The reason I'm looking for/at EWD (not that I understand them) is this issue of fog light control with parking lights on only, or totally independent of headlight SW altogether.
I've found Toyota thread/forums (other than our series 100 Land Cruiser, UZJ100) that have made this mod. They've done this fairly easily by bending the positive prong of the fog relay to disconnect power from low beam, than tapping that prong to power source elsewhere depending on desired control of Fog switch ie..independent of key off, key on or parking light on.. etc...
Additional the Europe series 100 is reportedly already controls; fog light on only when parking SW on. I was wondering (dangerous I know..LOL) could we simple switch switches?????????