Author Topic: Alternator Hookup Question  (Read 1702 times)

Offline MJS73

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Alternator Hookup Question
« on: June 01, 2008 - 06:57:30 PM »
I'm replacing a  Powermaster internally regulated alternator with a Powermaster 7419 (externally regulated) alternator and I have a question about the blue wire.  On the internally regulated alternator it was connected with a ring terminal to a terminal inside the alternator.  Where does it go on the new externally regulated alternator and where does the brown wire go?  I though the brown wire went to a terminal for the regulator.  The brown wire has a spade (female) slot.

Thanks,
Mike
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Offline Chryco Psycho

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Re: Alternator Hookup Question
« Reply #1 on: June 01, 2008 - 11:24:09 PM »
the external reg alt needs 3 wires , the large black power wire , the blue 12 v feed wire to 1 field terminal & a second green wire back to the regulater on the firewall , the regulater also has a blue 12v feed wire to it , not sure why you have a brown wire at the alt unless it is the feed to the washer bottle on the inner fender

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Offline MJS73

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Re: Alternator Hookup Question
« Reply #2 on: June 02, 2008 - 06:30:20 AM »
Here's my harness:



Here's the back of the old alternator:



So...
black = top (11:00 position on back of alternator)
green = 12:00 position
red = spade connection at 2:00 and ring connection at 4:00
blue = still gets connected to the terminal inside the alternator?

I think you're right about the brown wire and the washer bottle.  Good call!

Thanks, Mike
« Last Edit: June 02, 2008 - 06:32:06 AM by MJS73 »
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Offline Chryco Psycho

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Re: Alternator Hookup Question
« Reply #3 on: June 02, 2008 - 09:53:07 AM »
that is a different regulator than I have seen , not sure how that hooks up  :clueless:

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Offline ted

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Re: Alternator Hookup Question
« Reply #4 on: June 02, 2008 - 11:17:12 AM »
thats the regulator power master  uses on they 1 wire models.
74 cuda, 70 challenger r/t

Offline MJS73

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Re: Alternator Hookup Question
« Reply #5 on: June 02, 2008 - 11:49:50 AM »
I still have a regulator on the firewall.  Does anyone have a good photo of the back of a regular alternator?

Mike
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