kayakmaster

[SIZE=3]]Can anyone tell me how to go about making a fuse position that the book says is not used into a working fuse for an accessory I am installing? The book says that under the hood fuse box position number 23 is not used. How do I go about making it hot only when the key is in the acc or on position? Any suggestions would be appreciated. Or can anybody think of an easy to tap wire under the hood that will give me a power source when the key is in the acc or on position?