key on not running draw

I was having a problem with my lancer starting for the first time. I checked everything and everything is fine. What I did find was when the key was on but not running the voltage would draw down to 11.7V. When cranking was even worse. I removed the field wire + (blue) and the car started right up and had full battery voltage to the coil. I put the + (blue) wire back and removed the green field wire. Full battery voltage and starts easy. Put the green field wire back on no start 11.7V. removed plug from voltage reg. 12.6V and starts easy. With key on not running both the green and blue field wire are at 12.6V. Tried new voltage reg. same thing. Ground is definitely good on the V.R. had alt. shop test diodes and they are good. What am I misssing??