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  1. 64Amphicar

    1972 Mercury 500 50 HP

    Upon looking further I do not see a switch box on this motor either. At this point I am not sure if it a 1972 engine?? Also does any one know the wiring positions for the key switch?
  2. 64Amphicar

    1972 Mercury 500 50 HP

    Hello all, I am working on a 1972 Mercury 500 50 HP outboard. I am trying to get it running, but not been having any luck with getting an spark. I do not see a coil on it any where. Also no wiring to the ignition driver. Any one have any advise on these engines? The serial # is 3096872 or...
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