P1

This is a real quick one on adjusting the horn, generally you shouldn't need to do this but I've had cars that will beep when going tight around a corner or were simply just too touchy. The first step is to disconnect the horns, the last thing you need is for the horns to get stuck on when your working on them, especially in my case with the air horns, I still don't think the neighbours have recovered from the last time...In my case I am disconnecting the air pipe from the compressor, this way I can still hear when the horn is pressed but the neighbours can't ;) on standard horns your best bet would just be to stuff the horn with a rag.

P2

Excuse the flash. Looking at the steering wheel we see that we need to remove the actual button to get to all the goodies, on a standard HR steering wheel there are only two screws holding the center on, marked A and B on the picture they are behind the wheel, so you'll need to get down near the pedals to see them and remove them.

P3

Screw A, the left hand side, just unscrew it and this side is released.

P4

Screw B, the right hand side, once this one is undone as well the center should fall into your hand.

P5

This is where all the work is done. Screw A is an adjuster screw, it is what makes the contact if I am correct, it has a locking nut so if you make an adjustment to it you will need to make sure the nut is locked or it may undo the adjustment itself. Screws B, C, D are all just adjustment screws, on this job I wanted to remove all chance of the horn going off by itself so I only wanted it to work when I pressed the horn in the center. To do this I tightened and loosened the screws until when I pressed the steel on the outside on either the left or right the horn didn't switch on until the steel just made countact with the wheel. I found that adjusting one screw affected the adjustments of the other screws too, so you will need to play with the settings until you are happy.

P6

When you are happy with the settings the center button can be put back on the same way it came off, I suggest putting thread tape on the screws though because I've always found them to be unreliable at holding the button, they tend to loosen after a while on the road and you end up with a rattling horn button. Thread tape should always be put on against the thread, so if the screw locks in clockwise then the thread tape should go on anticlockwise. The reason for this is that the end of the tape won't be pushing against the thread when you are screwing the bolt in and therefore won't undo itself as you tighten the bolt. Now don't forget to reconnect your horns! (or take the rag out of them as the case may be). This guide was obviously tiny but I thought I would add it because I could find nothing in the workshop manual about horn adjustments, if I am wrong anywhere feel free to tell me and I'll correct it.