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 Posted: 06-27-2005 09:36 pm
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andrewo
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Joined: 06-01-2005
Location: San Diego, California USA
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What is the middle contact of the Lucas alternator supposed to hook to? It looks as if it might go to the + terminal on the starter, but I don't want to blow anything up.

Thanks - Andrew

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 Posted: 06-27-2005 11:58 pm
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Judson Manning
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Andrew,

Unlike the Delco Alternator, the Lucas Alternator only has +12V outputs (the 3/8" spade connectors) plus the 1/4" connector for the ignition light.  The outputs are identical.

Every JH wiring harness I've seen is slightly different, so I couldn't tell you exactly which wire goes where.  However, I assume you're replacing another Lucas alternator?  If so, it doesn't matter if you flip-flop the 3/8" terminals.

Of special note...The Delco Alternator has 3/8" ground connector.  If you are replacing a Delco Alternator with a Lucas unit YOU WILL BLOW SOMETHING UP if you attach the GND wire to the +12V terminal!

Just remember the story about the "Lucas Smoke" on Ebay...

Judson

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 Posted: 06-28-2005 03:29 pm
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andrewo
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I am actually reinstalling the Lucas on a car that I have been restoring for a few years now, and I just couldn't remember. It sounds like I could eliminate that wire altogether, since the other + output goes into the battery junction. If I run the second + output to the starter terminal, whiich is what the PO seems to have done, then I am really just duplicating my wiring, since that will feed back to the + side of the battery, just like the lead that goes into the junction, correct?

 

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