Bugger - wrong again. Do you get anything with the ignition switched to Auxiliary (Park)?

I can't see how your whole electrical system would fail because of a faulty turn signal relay. Maybe the faulty turn signal relay is just a result of the main problem.

Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge