I'm not sure if this will help or not..
http://www.mazdatruckin.com/vBulletin/performance/3820-130amp-ford-alternator-swap.html Pay special attention to the white and black wire which jumps over to the field as shown about 2/3rds down the page. I would also like to point out that several people who have mounted the alternator upside down to make the install easy have had the brackets break off shortly after. Welding up some new alternator brackets is recommended. -Kyrasis6 Mazdatruckin.com