I need one of these Flasher Relay's for my '71 Targa (has a 914 part #) 914.618.303.11, have tried several that are available from the usual sources that do not work correctly. Currently using a Wehrle brand but when the emergency brake is engaged the buzzer comes on and both turn signal arrows light up. I can live with this one as everything else works great. Here are pictures of the original one that was in my car.
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