a relay under the dash might be the noise, because flashers are basicaly relays that open and close. If i am not mistaken your brakelights have a relay for your break lights. Pull the bottom panel off the dash and do what ever you have to do to get it to make the noise. If you cant see under there feel around you will be able to feel the relay clicking when you touch it. Best i can do with out actually being there. Hope this helps
