for a low speed switch: grab a switch from the parts store. find a 12 volt Key-on hot feed (like how you did your gauges; when the key is on, the wire has 12 volts. When the car is off, the wire is dead.). I mounted a switch panel in the ashtray so i used the harness for the vert top. on the 'accessory' terminal of the switch, attach a wire to run to pin 14. now you have a low speed fan switch. (You can also put a grounded wire on the ground terminal of the switch if the switch illuminates).
For high speed: find a real clean ground near your switch's location. run that to the 'power' terminal of a second switch. from the accessory terminal on the switch, run a wire to pin 17 on the CCRM. you can use LED's etc (Shane has a diagram for that), but you dont have to.
Post or PM if that was hard to follow (articulate, I am not!).
good luck bud!