WARNING! Read this before proceeding any further!
Wiring PSU involves working with potentialy lethal voltages. Mains voltage can kill you!
Attempt wiring only if you know what you are doing. Otherwise get help from a certified technician. In no case RackNeve.com and its owners should be held liable for any damage to equipment, injury or death of operator. If you move on you accept these terms and agree to NOT hold anybody liable for your actions.
Ok. Hopefully your are not scared enough to drop the build and run away. Let's move on to the PSU and mains wiring. Be extra cautious while doing this and NEVER work on live circuit - always make sure that mains power cord is unplugged before putting your hands or soldering iron inside the unit.
Now that the unit is working we need to test it and adjust for proper operation.