I'm seeing over 25 volts at the cables and I'm also seeing it at the service key test port, which I'm told shares the same wires going up the handle to the etac card. With all the components I've swapped out now I'm leaning towards either a main harness short or a short in the harness that runs up the handle. I'm going to swap handles to rules out the handle harness. Then I'll just be left with a main harness issue if the problem still remains.