Simultaneous warning lights, no speedometer . . .

I have a 2000 Dodge Dakota, 2.5L 4-cylinder, standard transmission, 117,000 miles. All of a sudden, the BRAKE, ABS, and check engine lights are on, and are staying on continuously. Also, the speedometer stopped working at the same time. The truck seems to operate normally, like it always has.

Any advice you might have would be appreciated.