I want to mod my pc so that my fans can be turned on and off with switches on the outside of my case (maybe in the expansion bay). Now the idea I had in mind was to cut either the positive or negative wire from the fans molex connections, and solder a green LED and switch to it (I'll worry about encasement later). The problem is that I don't know if the LED will hinder the fan's performance or if it wont would I need a resistor to keep the LED from burning out, and if the resistor would limit the fans functionality, I'd like to have the green LEDs to show which fans are turned on. Can I make this happen or is this just a pipe dream?