Hi,

The self cancelling mechanism on my indicators has failed. It probably works
1/25 times and quite often clicks the indicators off while going round a
roundabout (as if it has somehow misaligned and thinking that when the wheel
is at 180 degrees its time to click-off)

I've had a look in the Haynes manual (which is pretty crappy!) and it
doesn't mention anything about this.  I know a lot of people with different
cars that this has happened to so its obviously a common problem with cars!

How would I go about accessing the mechanism and whats likely to be the
problem?

Thanks!