IF you check the forum stickies under the v6 technical thread there is one called workshop manual, its an online PDF of the entire manual for out model and year car. you can find that information there under the electrical section I believe. https://www.allfordmustangs.com/forum...ce-manual.html
More directly found here ==> Ford Service Manuals - Workshop Manuals
I used the info there to wire up my remote start for my subwoofer off one of the SJB so it would not power on while the car was starting, and it would only power on when the engine was running. This is to ensure the engine has the most cranking force from the battery on startup, as the AMP sucks a lot of power.