What causes a blinker relay to buzz?
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When I indicate a left turn, everything works fine. When I indicate a right turn, the relay just buzzes loudly and the green arrow in the dash lights up dimly. I'm guessing that this means there is either a short or an open circuit in the right side blinkers (or the blinker fluid pump has gone bad). Which is more likely to cause the buzzing? A short or an open?
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But even with the terminals cleaned up, even the front right signal does nothing. I do have a spare relay, I'll swap them and check.
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