Where is the horn relay on a 1987 cutlass ciera station wagon also is there somewhere, where I can find out which fuses go to what? I don't have the owners manual. My horn is not working I don't know if it is the relay or a fuse?

According to my service manual for a 88 ciera the horn fuse is also the ctsy. fuse which operates the cigarette lighter. The relay is located in the convenience center which is behind the dash on the left or right side. (one page of the book says one place, another page says the opposite). I think the buzzer that sounds when you leave the lights on and open the door, or the seat belt buzzer also has a relay in the convenience center. This may help you locate it. You could also remove every fuse one at a time to see if they are blown.
good luck

Thank you! All fixed now:) beep beep