Dead short? ECU

[Rdraidr]

I'm working on a stolen/recovered '05 FJR ABS. I replaced the ignition, verifying I had the correct wires in the correct slots. I replaced the maligned starter solenoid. However, when I put power to the unit and turned the ignition (key) to run, the 10amp ignition fuse blew. I checked and have continuity from the ground of the battery to the hot side of the battery. I started unplugging connectors and checking the red primary wire at each location. Finally, I traced the "short" back to the ECU. When I unplug it, no continuity. Plug it in, continuity. Any thoughts? Much appreciated.