DEAD 1972 plymouth valiant

Driving back home last week and as soon as I put my lights on the car bucked and misfired. The voltmeter went all the way to the right and everything shut off. The next day looked and found the blue fuseable link was burned. replace link and when I turn the key nothing . not even a click. Going to replace the voltage regulator and the ballast resistor. Can anyone help. Battery is fully charged.