ABS and brake lights

I have a 91 B250 conversion van (RoadTrek). The brake lights have stopped working and the ABS warning light has come on. Not sure if both happened at the same time or not. Is there a connection between the ABS light and the brake lights? The brakes are working fine and I am getting power to the brake light switch. Any help would be greatly appreciated.

abs warning light and brake light should be seperate systems. If you have power at and after switch check for power at light,bad bulb, bad ground at light if no power at light with brake on look for a broken or bad wire.