I was hoping to get some suggestions on where to start. I have a 79 spider that works most of the time. Last fall I was gettinf ready for Wheels of Italy and it began. When I turned the key there was nothing, no lights no clicks, just dead. Voltage at the battery was about 12 v. No votage at the alternator, I believe I had voltage at the starter. I have cleaned the grounds and connetctions, pulled the starter and it tested fine. The no power situation happens randomly, sometimes when I am checking voltage at different points power comes on, now it gets wierd. If I had the no power situation and the power kicks in, when I turn the headlights on power goes dead. Since voltage is only around 12 V at battery when the car is running I was told I could have corroded cables, so I am replacing them . I was told it could be the ignition, but even if the ignition is bad, when the car is off shouldn't i get voltage at the alternator? Also could my problem be the voltage regulator?