I'll try and help you out, I have the 250's
Now what i did was I had several computer power cord lying around so i cut off the part that connect to the computer and stripped the wires. The color of the wires in the cord were brown blue green
For Wiring i ballast the wire colors were blue, brown and green , So on the imput (wall) I just matched the colors and ran the green wire too the grounding the metal knob
Now for the socket, I have the PFO socket/reflector so I attached the White and brown wires together and blue and black wire together on the output line (lamp). Green is ground So i ran that too the metal knob
I should mention on my pfo socket cord i cut off the quick disconnect end and stripped the wires inside
I have no quick disconnects, no big deal on my PFO ballast i really didn't need them