12.
Next loosen the side screws on one of the metal arms on the bottom mic bracket, and slide the metal plate into
place. Twist the transformer wires a bit as you go. Then install the 2 screws to hold the metal plate in place, and
tighten up the side arm screws. This is actually where I connected the ground lead. I used one of the solder lugs
from the condenser element for the ground.