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Attempted overthrow of a 90 240 by it's own headlights 200 1990

"Suspecting the headlight relay for the buzz, I consulted Bentley who advised it was under the center vents. I tore the center consul apart without locating it. Dinner time again so one more night with the windows open."

That's where it moved in '91. In '90 it was under your feet.

"...big blue wire hidden under the battery..."

That's the battery cable's chassis ground. Without it, every load on the alternator referenced to the car body needed to return through the radio noise ground strap (firewall to cam cover). The fuel injection returns through engine block grounds (at the fuel rail mounting screws). The battery negative to alternator connection looks like it is OK, assuming you saw no trouble with the battery cable's big lug bolted to the block.

No excuse for 187 minutes of open windows if rain predicted.

PS - I believe any large load grounded at the body would have done the same as your headlights, for instance the heater blower. No indictment of headlights.
--
Art Benstein near Baltimore

"Freedom of speech gives you the absolute right to pose any question you like based on whatever unsubstantiated assertion you choose."






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