brake light stays on

[jhow66]

That light tells you that one side of your brakes are not working. The problem most likely is your MC. It is not putting pressure to the front or back brakes. When this happens there is a piston inside the prop. valve that slides to the side that has no pressure and grounds the light.(when working right same pressue on both sides of piston.)If your have done what Stocker said, hold valve in while someone applies brakes until light goes out.