Is their a sensor switch for the e-brake which activates the dash light? on 1994 Ford Explorer

I was wondering if their is some kind of sensor switch or sending unit for the e-brake, that turns the dash light on,when the e-brake is engaged and where it is located? Occasionally, after engaging my e-brake the dash light won't come on? If their is indeed some kind of sensor that turns the dash light on when the e-brake is engaged I think it may be faulty, because I know that the indicator light does in fact work. Any help you could give would be greatly appreciated.

Asked by for the 1994 Ford Explorer
The switch will be located on the park brake actuator assembly. Look at the actuator and you will see it with wiring running to it. May be out of adjustment or mount is bent a little causing an intermittent connection problem.