How do you replace the horn relay in a 1992 Nissan Stanza XE that appears to have already been replaced once before by mechanic?

1. Locate the horn relay. It is usually located in the engine compartment, near the battery. In the 1992 Nissan Stanza XE, it is located on the driver's side inner fender, behind the battery.

2. Remove the cover of the relay box. The cover is usually held in place by a few screws or clips.

3. Identify the horn relay. The horn relay is usually labeled, or you can find its location in the vehicle's repair manual.

4. Remove the horn relay. The horn relay is usually held in place by a few clips. Gently pry the clips open with a flat-head screwdriver and pull the relay out of the socket.

5. Install the new horn relay. Insert the new horn relay into the socket and push down on the clips to secure it in place.

6. Replace the cover of the relay box.

7. Test the horn. Honk the horn to make sure that the new relay is working properly.