Where do you put brake fluid in a 1994 Ford Probe?

There is no brake fluid reservoir in a 1994 Ford Probe. Instead, the brake master cylinder is integrated into the brake booster, and the brake fluid is added through the top of the booster. The brake booster is located on the driver's side of the engine compartment, and it has a black plastic cap on the top. To add brake fluid, remove the cap, add fluid until it reaches the "FULL" mark, and then replace the cap.