does not shut off. When only the front brake lever is applied, the brake light comes on. When only the rear brake is pressed, the brake light does not light. The brake light does light when both brakes are applied.

In the meantime, the brake hazard light is constantly on and does not turn off when the brakes are tapped. Where do I begin to fix this problem? Is there a rear brake sensor that needs adjusting and if so, where is it located?