Single Wire Alternator Setup on a 1967 - Impala Tech
Electrical & Wiring Troubleshooting electrical problems

 
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post #1 of 5 (permalink) Old 03-01-2018, 01:40 PM Thread Starter
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Single Wire Alternator Setup on a 1967

With the engine swap and a change over to a March pulley setup, my alternator has now moved to the passenger side of the car as a mid mount on my 1967 Impala. I also replaced the starter with a small high torque to spin my BB, both items are Powermaster. The alternator is a CS130 at 140 amps and I was debating if I can run one cable from the batter to the alternator and from there to the starter, or I guess battery, starter then alternator. My original thought was to have a single pos + cable going to each separately from the battery but that will really clutter up the posts. Any idea why this would not work? I was planning to put a circuit or fusible link on the alternator connection also. Let me know your thoughts.
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post #2 of 5 (permalink) Old 03-01-2018, 02:01 PM
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One wire to the alternator from the battery is good if it is a ten gauge wire. The starter needs at least a four gauge wire (I use 00 gauge) to support the 230 Amp draw when cranking. So you will need two cables on the positive terminal (tree if you feed the car'circuitry directly off the battery, the way it was designed).

Big Dave
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post #3 of 5 (permalink) Old 03-01-2018, 02:56 PM Thread Starter
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I was thinking of one continuous cable..... start at the battery and go to the alternator, then from the alternator to the starter. I know it would need to be about 00 gauge wire since the draw at the stater is a lot more than the alternator is putting to the battery.
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post #4 of 5 (permalink) Old 03-01-2018, 04:53 PM
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Wouldn't recommend it as you would have two 00 gauge terminals attached to a eighth inch stud out of the alternator. I would worry about the stiff cable breaking off the stud on the alternator if you tried it. Not to mention the added expense.

Big Dave
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post #5 of 5 (permalink) Old 03-05-2018, 01:20 PM Thread Starter
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Good point, didn't think of that. Two cables it is.
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