Step 1: So here's your laptop cord...
I'm doing 3 things, you can choose to do as many you want and you will still have a much awesomer power cord.
1) Shortening the big 120v cord so it wraps around the brick only once.
2) Adding a 3-way plug to the power cord so I can charge when all the outlets are full.
3) lengthening the small charging cord to 20' to reach farther.
Step 2: Make sure your laptop cord is only 2 strand
Step 4: Cut and strip the charging wire
Make sure to keep track of your wire polarities at all times!