Bend the second diode into a "U" shape with the lead from the silver banded end bent at the body,
the lead from the black end bent 3/8" from the body. Trim 3/4" off the lead at the silver banded end.
Insert the lead from the silver banded end into the power transformer terminal 5. Do Not solder. Trim excess.

The red and black heat shrink does not come in your kit. I added that for extra protection from shorts.