Check oil light on 94 Explorer

I have a 94 Explorer and the oil sensor light comes on (most of the time). The oil level is full and the oil pressure is normal. Is this a plug in sensor that I can check and see if its plugged in? If so where is it located?

Also have the same thing with the brake light sensor. Emergency brake is not on..

Thanks

Newlondon

the oil level sensor is in the side of the oil pan. easy to find. the brake light is more then likely the float in your master cylinder unplug it and see if it goes out.