Quote:
Originally Posted by MercFan
I though that too but the other lead is marked 'Bat' - battery?! If so, why would there be a direct connection to a battery and then a separate connection to the voltage regulator?! Maybe the battery can deal with the spikes and the instrumentation has to go through a regulator to be protected?! Would the alloy jacket be the ground on this thing?
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The case is probably ground. Do a search for the alternator using some of the numbers in the casting. What year truck did it come from?
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 1987 560SL
85,000 miles
Meet on the level, leave on the square. Great words to live by
Were we directed from Washington when to sow and when to reap, we should soon want bread. - Thomas Jefferson: Autobiography, 1821.
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