The one to take loose and connect into is on the top, inside, and
toward the front. It will have MC1 stamped on the left side of it (looking down at it from the front of the car), and is prolly green like mine. The RF stamped on the right side of it is for the line that connects to the side of the ABS unit, FYI.
Anther idea - attach the solenoid valve to the under side of the ABS unit bracket. I found that the intercooler lines are just too close to mount the valve to the back side of my bracket.
Have fun. Take your time bending the lines so they will look decent when you have finished.