on my 94 nautique i noticed that the tach ,one spedometer , bilge pump auto breaker, blower breaker, and acc. three have stopped working all within a week of each other.. the spedo went first then the tach and then all three breakers at once it seemed like.. i tried replacing the breakers with new ones and to no avail they still dont work..i think i have a short somewhere on my hands. any ideas?