It does sound electrical.

I had something like this on my XTR, found out that the kill switch wire broke at the connector under the LHS of the tank. Once the mechanic found the problem and fixed it he suggested the same as Kev said for all the rest of the connectors as there is quiet a few on the LHS of the bike. Also the same for any of the connectors at the rear of the bike on both Right and Left hand side of the bike.

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Plough on