Tell me about your ballast resistor failure.

Mike69cuda said

I used to carry extras in the glove box in my youth. They failed pretty frequently in the 70s.

When they fail, the car will start, but as soon as you let off the key it will die.

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I never had one fail on my own cars. But did change a few on friends cars.
Once was due to a bad alt.
One had some other part fail and it took it out, and fuseable link. I can't remember what parts it was.
Was a,sacrafial lamb I guess