Setting initial timing and need to know where push-button starter leads go...

Hey, all. I'm setting timing on my duster for the first time and bought this push-button ignition button to "bump" the motor to get piston 1 in it's compression stroke while I'm working under the hood. I need to know where the positive and negative wires on this thing hook up on the motor in order to use it! Please be descriptive as I don't know too much about this car or old cars in general yet. Thanks.

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