My horn stopped working so I embarked on a fault finding process to find the problem.
To cut a very long story short, I checked the fuse diagram and saw that Fuse 9 was the horn and radio. Radio still working so it can't be the fuse.
So move on and look for other issues. Horns worked when hot wired. Horn push continuity fine. Steering wheel earth contact continuity fine. Couldn't find any broken wires or loose connections.
What the heck????
Then I remembered that the radio is always live but the horn only works with ignition on so how can that use the same fuse.
Re-check the fuse diagram and spot the radio can also be covered by fuse number 17 which is permanently live for radio, courtesy light and others.
Pull number 9 fuse and low and behold the radio is still working.
So replace with a new 10 amp fuse and eureka the horn works.
The fuse diagram for my 2009 car is misleading or at least has a choice of 2 radio wiring options. One using fuse 9 and the other using fuse 17.
Anyway, problem solved but it just goes to show that Morgan fault finding is not always logical and straightforward
