Measure the battery voltage. If less than 12 volts, charge (or replace) the battery. If you have a standard ignition (not an aftermarket ignition), connect a volt meter to the positive terminal of the coil & to ground. Turn the ignition switch to the run position & read the voltage. Next, read the volt meter while cranking the engine. If the voltage reading drops significantly, you have an electrical problem. The early cars had a relay in the ignition circuit. It is located above the right side foot well.
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