Scott here's how the 3 plug EJ alt should be in the EA car.
White wire = tied to the main charge wire (good idea to make new charge wire back to battery through fusible link)
Black/white= "charge" Lamp (L) goes to EA white/red wire....looks like you;ve got that right
Yellow= Switched power.....and this will be were the regulator sees reference voltage......Can go to EA Black/white (Ig. +) or to the Yellow wire of EJ harness like it was in the Legacy........It just needs switched power.
Edited by Gloyale, 14 July 2014 - 10:55 AM.