The primary and secondary windings are connected, but the secondary has such a high resistance (thousands of ohms) that it's hard to imagine the continuity tester getting enough of a circuit to buzz. You might try disconnecting the wire from the coil while you're using the continuity tester to prevent any possibility of a stray circuit triggering the tester buzzer. The ground through the points will be the same whether or not the coil is connected.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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