2012 Tail Light Short

Please help! I am trying to isolate a short in my 2012 Prius Two. I have unplugged the harness up front behind the bumper that feeds the lower lights (not sure if same circuit or not) and unplugged every light on the circuit. Still blows the 10A fuse instantly.

Where are the wiring harnesses routed back towards the tail lights? I would like to start unplugging to test.

Any help is greatly appreciated.

FYI - I just bought this car, 190K, has been in some sort of accident that cracked bumper covers and front headlight assemblies, which I am now replacing. Car came without working taillights.

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So I have been trying to trace the brown power wire in the tail lights using a multimeter. When I test for continuity from power to ground I get is all along the wire! Even when I disconnect sections of the harness under the panels - every place I test I get continuity. How does this happen and how can I check the power wire properly for shorts?

 

Solved! After ripping the car apart and starting to use a free wire (engine hood courtesy light) to work around what I thought was a short in the main harness, I discovered this! One of the right marker lights had the two wires touching from degraded insulation only 2 inches from the bulb!

Check out how much of the car I took apart to find this...

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