You'd be hard pressed to mess up the electrical inside by screwing up the ECU dash clip wiring - the dash gets power/all "idiot light" signals through the chassis harness, not the ECU harness.
Check fuses one more time, in the fuse box in the passenger side of the engine compartment and at the drivers side kick panel. After that, you'll want to pull the plugs going out of the inside fuse panel (they'll be snaked around all over the place) until something changes. Also, make sure your ignition is actually giving out juice on the ACC setting.
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