I have a early 260Z with what I think is factory original electronic ignition (I think this was the first year for electronic ignition in the Z). When I turn the key I get a click but the starter motor will not turn. If I keep turning the key on and off, eventually the starter motor will turn and the engine will fire. If I hot wire the starter, it turns fine, so there seems to be no problem with the starter. What else could be wrong? Could it be the transitor ignition module? If so, how do I fix it, and can I simply replace it with a modern electronic ignition?