right signal problem.

Ok when I turn on my right signal it will blink normal until i tap the break... After I tap the break it will go solid, not relaying like it should. If I let off the break it goes back to blinking. How do I fix this?
Truck specs:
1994 Nissan Pickup
SE V6 / 4WD
D21 HardBody

Check the bulbs to make sure they are all functional.. if they are you may have a short to that light.