[kyngfish]

Your brake pads could be getting worn and causing your fluid to be low - I might check that first. I'm not sure if it's the same for all 911s, but for mine, the fluid level makes the e-brake light come on.

I also thought it was the switch on mine, at first it was really intermittent, then it was constantly on. I would sometimes jiggle the ebrake and it would go off, but now I think it was just that the fluid was warming up or after I started moving it would trip the sensor when it was just barely low.

Anyway, could still be the switch or a short, but that's the first thing I'd check.