Help! KTM E8 error

[vfr400]

The box on the cable running from the display is a ferrite core, it should be able to slide up and down the cable (mine does at least), it's not related to the fault. I have not yet contacted KTM as the repair I effected is likely to last though their apparent dis-interest is concerning. You need to check electrical continuity on the black wire (from my first photo) running back to the connector at the battery junction. A good bike shop (or even a handy electrician) should be able to manage.

Look at my post above, which tells you where to look for the source of your problem.