The brake fluid level switch and the parking brake switch are simply
switches to ground to turn the indicator lamp on. When the high beams are
off, that circuit is also a ground (Ford uses the high beam circuit as a
ground for fog lamp relays so that the fog lamps are not on with the high
beams). I would suspect that you have a short between one of the brake
circuits and the high beam circuit. Most likely the parking brake switch
since they wires are so close near your left foot.
I did indeed find a short on the one of the brake switch wires. I ended up
running a new wire from the fuse box to the switch.
I had to do this when the car refuse to come out of park!!! I know there are
a couple of more problems with the circuits, I'm working on those now as
well. There are lights on when you shut off the car, but they are not the
auto lights, nor is the light switch turned on. If I pull the fuse for the
flash to pass, the lights go out. I also replaced the multifunction switch
which I thought was causing some of my problems. After replaced the switch
and the wire I found that my brake warning light went out and the car would
come out of park. So I still have to find out what is causing the lights to
stay on for the flash to pass. What I really need is a full electrical
schematic. So far I've only been able to find partials like the ones listed
in the back of the Haynes Taurus manual.
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