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Alternator question? 700 1990

I have a 1990 740 non turbo with a no start condition.
Battery has pleanty of juice to crank and crank.
There is no spark fron the coil.
Can a failed alternator/voltage regulator cause a no spark condition?
This brick is equipped with the rex/regina ignition system.
I suspect the alternator because the battery light has been on ever since the engine suddenly stopped.
The crank sensor will be replaced just because the cable doesn't look so good but that will have nothing to do with the pesky battery light.
Is there a wiring harness that may be suspect?

Thanks

Richam






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