The clutch switch sits under the perch, it isn't part of the left hand switch assembly. The wiring isn't common between either, they both run in separate sheaths to the main loom. There is unlikely to be a short in the controls, but of course there could be one further into the main loom?

Are you sure you aren't just catching the headlight flasher switch with your glove when pulling the clutch in? Its easily done, specially if you've got big 'ol shovels for hands!

Otherwise, as you say, make use of your warranty.

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