Wondered if any one has found the same fault as i did today with the wiring around the head stock of their speed 400's. Cleaning my bike today i spotted the sheaf protecting the wiring split at the head stock area.
That's reminiscent of the problem on the earlier Street Twins where the cables rubbed as you turned the handle bars. In the case of the Street Twins there was a recall fix, which from memory was a plastic cable tidy. From the picture it looks like a kink in the sheath is making it rub?
If you turn the handlebars left I’ll wager the cut line on the sheathing lines up with the edge of the tank and that’s what’s cutting in
