fdx 604,
The red brake light is a warning light for low fluid. But if your fluid is low enough to trigger the red brake light then you have a leak somewhere.
You may have the same problem as mine. In order to find out.
Start the van and have someone sit in the drivers seat and pump the brake pedal. Pop the hood, get a flashlight and while the second person is pumping the brake pedal, look at the end of the master cylinder. There is a speed control pressure switch hanging off of the fwd end of the master cylinder. If you have the same problem as I do, there will be brake fluid leaking out of the bottom of this switch(near the wire harness) when the brake pedal is depressed.
This is where the fluid is going. The brake fluid in the wire harness causes all sorts of weird things to happen. One of these things is illuminating the abs light when the other components of the abs system are functioning properly You should inspect other abs components to make sure they are funtioning properly and are not the cause of the abs light coming on. I have checked my abs system myself and have had it checked out by numerous shops(including Ford dealers) and the abs system is fine.
In the thread I refrenced earlier it caused his fuse#10 to blow. The replacement part is only $27 at the dealership. I will post later this weekend how hard/easy it was to replace. | 
