Ignition Switch

I'm trying to install this switch to my 95 caprice. It's a switch to keep the engine running without the key in. There's 4 wires, white, black, yellow, blue. When i took it out of the car i made sure to keep some of the wiring of where to reconnect it, yellow - brown, black - pink, white - red. blue is the only one im not sure about...its connected to a small red wire but the blue keeps on going also. anyone know what the blue connects to? i have another switch which is a toggle connected to a relay but its hard to explain. heres pics of the other one. any help on either one would be great http://www.geocities.com/white9c1/switch.htm

http://www.geocities.com/white9c1/switch.htm heres that pic http://tinypic.com/1gora9