I'm looking into what kind of horn I'll use on my car (it's not here yet) and was looking for the fuse size on the car. Some decent horns are available that could be used without adding a relay, and others draw too much current to use without a relay. (Don't ever just replace the original fuse with a higher amp-rated one.)
I looked through the manual Regina (rrrucke) posted, and there is no fuse listed for the horn. The fuse chart is listed on page 284.
I think there's a problem with the chart-fuse #7 is for "Parking and Lamp, left", but there is no right side listing.
Anyone have the actual manual nearby?