Tracing this issue (20 Brown wire constant .79 am draw), I pulled the gauge cluster off looking for an obvious issue with the wiring under the dash. I didn't find that, but I did find the printed circuit board was peeling and separating. I know the plastic shouldn't be separating, but these pins aren't where I'm having the issue. Could a short in another area of board cause a short to ground in the alternator dummy light?