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In our Sun Odyssey 37 we have a Volvo Penta 39 HP that runs very well. At the end of last season the buzzer on the ignition pannal stoped working. We tested the buzzer and that works fine, all wires look fine, and have been given a good shaking to see if we could get contact. I don,t know what to do next to find the reason for the buzzer not to sound when the power is on and the engine is not runnig... thank you for your help in advance Joe.