Wire Hiding
Welcome to the world of wire hiding! This is probably the most popular case mod out there. Wire hiding is pretty self explanatory, you hide wires in your case. This can include all the wires, 24 pin, molex's, IDE cables,(used for HDD's and CD/DVD drives) SATA and so on. This is a huge improvement in the look of your case, and air flow! There are many methods to hiding different wires. We will start with the 24 pin, the main power cable to your motherboard. It will help a lot of this is wrapped[see moding supplies, wire wrap] as hiding your 24 is no small task. Some mods people have stuck it behind the motherboard it self. When your MoBo is out of your case, pull the 24 pin to the back of your case, on the outside. If your case has it, pull it through a hole in the back panel of the chassis. Then plug it in to your board, then screw the board on, keeping the 24 pin between the slight gap of the board and the back panel of the chassis. Otherwise, pull the 24 pin through and screw the board in then plug it in, either way will work. If you do not have holes in the back panel, just simply wrap the cable and plug it in, mines done like that and looks nice.
Wire Hiding
[Continued, 4 pin Molex's]
Now that you have the 24 pin hidden, lets do the 4 pin molex's. These are the best, as some do not even need to be shown. Some fans as we have covered connect through the 4 pin molex's. These can be hidden completely. Take off the back panel of your case, revealing the back chassis of your case. Start off with all the 4 pin molex's from your PSU out side of your case, on the back panel of the chassis. Now start bringing them to the inside of the case, as needed. Lets say you bring one cable through that has two 4 Pin molex's on it for your HDD and DVD drive. This will be hard to get rid of due to them being on the same cable for two devices. Like every wire in your case, they should be wrapped so any show wire will still match your theme\color. Look through your case for any thing you can put the cable behind and or keep down from just sticking out in plain site. One thing you can do to get rid of the power cable to your HDD is doing a backwards HDD mod. This is when your HDD is in backwards in your HDD cage/rack. Get very long IDE/SATA cables, as you will need to bring them from around the back side of your case to your motherboard. Same as the molex cables you are working with they need to be long enough to reach that HDD while its turned around.
Now on those fans! The fans that hook up via 4 pin molex's can be taken care of. Since you start off with the molex's behind out side your case, we got one through for the devices, lets put one aside for fans. Now lets say you have two 80mm fans in the front as intake in your case that hook up via four pin molex's. Take the cables from the fans and pull them up in the front of the case, vertically along the HDD cages/CD, DVD Racks. This should allow you to bring it to the outside back panel of your case, where all the wires from the PSU are chilling out. Simply plug them into one of the molex cables and your all ready to go! No need to bring the wire inside, just keep it down on the back outside of your case, use something to keep it down to the chassis as your back panel will need to go back on, I use hot glue to keep the molex's down, anything will really work. As it goes for four pins for other devices, be creative and just find a place to keep them out of the viewing area of your case.
Wire Hiding
[Continued, Cathode wires]
Cathode wires can be a pit tricky, because they have a switch that goes into the PCI shield slot and looks really ugly. Now there is a way to get rid of these, but if something happens to your cathodes or inverters because of what you read on here, its your own fault. Now what a switch does it complete a circuit and allow a current to pass through. In our case, you are letting the current from the molex power the inverter. Notice you will have three wires, yellow, black and red. Now, these are very messy so what were gonna do is is cut the black and red from the 2 pin plug in that goes into the inverter, leave your self some good amount of wire, you will need it. Now cut the yellow and black wire from the molex plug in. Attach the yellow wire from the molex to the red of the 2 pin and the black to the black. This will give your inverter constant power, and your can stuff that inverter anywhere you want, dragging the plug in behind you case to hang with the fan plug's.