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Primary ignition circuit

Tiny
MIKE1961
  • MEMBER
  • 1972 PONTIAC CATALINA
  • 7.5L
  • V8
  • 2WD
  • AUTOMATIC
  • 500,000 MILES
I am supposed to have battery voltage (twelve volts) at the positive terminal of the coil with the ignition "on". I only have 5.8 volts. What might the problem be?
Sunday, November 26th, 2017 AT 11:42 PM

1 Reply

Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
Is this a contact point ignition?
I have the wiring diagram and I do not see contact points or any ballast resistor. It is a pink wire coming from the ignition switch that feeds the twelve volts, so check that wire leaving the ignition switch for twelve volts.
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Monday, November 27th, 2017 AT 6:18 AM

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