alternator wiring direct to battery????
#530420
11/18/09 11:44 PM
11/18/09 11:44 PM
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Joined: Aug 2003
Posts: 4,682
On the parachute mount
n20mstr
OP
master
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OP
master
Joined: Aug 2003
Posts: 4,682
On the parachute mount
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does this make sense??
i want to wire the alt direct to the starter/battery with 4 ga wire, should i hook the factory ammeter to this also or leave it un hooked?? I understand the factory wiring goes through the ammeter, but i want to run the alt direct to the battery and if possible still ahve the ammeter hooked up ???
....BAD A$$ STREET CAR.....
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Re: alternator wiring direct to battery????
[Re: n20mstr]
#530423
11/19/09 01:23 AM
11/19/09 01:23 AM
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Joined: Dec 2005
Posts: 202
CA
62SAVOY
enthusiast
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enthusiast
Joined: Dec 2005
Posts: 202
CA
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There was a warning and even a writeup in a few mags awhile ago on putting a lot of amps through the stock Ammeter. Would not handle it and would catch fire possibly. Not something I would chance after reading the article and some show cars had even burned  . I would do like you are doing. Going separate. I had a gauge melt and catch fire in the car.  Was at night too. I called the gauge company the following day and told them and they said I had over done it. I asked how if the car has a 60 amp alternator (I was running the alt cable through it so I knew exactly what it was putting out) and I only draw 15 normally and 30 at night. He said I should be using a volt gauge instead and they sent me one for free as a replacement.  I know in our airplane when I wired it they had me use a bus bar for it. The gauge came off a screw on either side of the bar so it didn't take the full amp load to it. Might be something to look into also?
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Re: alternator wiring direct to battery????
[Re: n20mstr]
#530424
11/19/09 03:46 AM
11/19/09 03:46 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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You should use a fuseable link to protect the wiring , and prevent a fire if the alternator wiring shorts out. Use a voltmeter to monitor alternator output, the stock alternator and bulkhead connections will not take the high current. The stock wiring was designed for the stock alternator that only put out around 36 Amps. You can run the stock alternator wiring in parallel with the new wire going to the battery through a fuseable link. The new wire would act like a current shunt to the original ammeter, so if the resistance of the new wire was the same as the original wire circuit, the ammeter would function, but read 1/2 the current ammount. So if the ameter reads 15 Amps, the outout would really be 30 Amps.
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Re: alternator wiring direct to battery????
[Re: 451Mopar]
#530425
11/19/09 08:32 AM
11/19/09 08:32 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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only way it will work is with a internal regulator in the alternator. gm style,1 wire style. going with a stock alternator directly to the battery will fry fast.,you'll need a voltage regulator to keep voltage from spiking, and fluctuating.
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Re: alternator wiring direct to battery????
#530426
11/20/09 12:41 AM
11/20/09 12:41 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
only way it will work is with a internal regulator in the alternator. gm style,1 wire style. going with a stock alternator directly to the battery will fry fast.,you'll need a voltage regulator to keep voltage from spiking, and fluctuating.
I think you mis-understood what I was posting because running the alternator output wire in parallel would actually reduce spiking because there is a lower resistance path to the battery.
The original alternator output wire is still attached to the alt output. The voltage regulator is still getting its "sense" voltage from the keyed on ignition, and that voltage is still comming from the wiring. I hope it makes sense? I need a drawing program so I can post a schematic 
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Re: alternator wiring direct to battery????
[Re: n20mstr]
#530427
11/20/09 02:23 PM
11/20/09 02:23 PM
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Joined: Mar 2007
Posts: 89
oregon
ramcharger1964
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member
Joined: Mar 2007
Posts: 89
oregon
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Are you trying to keep the stock look to your dash, or do you already have some aftermarket gauges????
Best sdvise is to completely bypass the ammeter and use a volt meter. Why run all your "juice" through that little ammeter if you don't have to.
Hell B!tch Racing Co.
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Re: alternator wiring direct to battery????
[Re: 451Mopar]
#530428
11/20/09 05:25 PM
11/20/09 05:25 PM
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Joined: Apr 2009
Posts: 58
Allentown,PA
68_300_conv
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Joined: Apr 2009
Posts: 58
Allentown,PA
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Quote:
Quote:
only way it will work is with a internal regulator in the alternator. gm style,1 wire style. going with a stock alternator directly to the battery will fry fast.,you'll need a voltage regulator to keep voltage from spiking, and fluctuating.
I think you mis-understood what I was posting because running the alternator output wire in parallel would actually reduce spiking because there is a lower resistance path to the battery.
The original alternator output wire is still attached to the alt output. The voltage regulator is still getting its "sense" voltage from the keyed on ignition, and that voltage is still comming from the wiring. I hope it makes sense? I need a drawing program so I can post a schematic
You will be OK hooking the output directly to the battery with a fusible link. You also need to remove the wiring from the alt meter because all the current will still want to go through it to get to the items you are trying to power up.
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Re: alternator wiring direct to battery????
[Re: forphorty]
#530430
11/21/09 01:33 AM
11/21/09 01:33 AM
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Joined: Aug 2003
Posts: 4,682
On the parachute mount
n20mstr
OP
master
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OP
master
Joined: Aug 2003
Posts: 4,682
On the parachute mount
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ok guys, i wired the alt direct to the battery with 4ga. left the amp meter hooked up as normal also, The car charges great, 17 volts with nothing on, 13.6 with everything on except for the nitrous/fuel sol. Of course the amp meter just stays on the middle and doesnt move.,
....BAD A$$ STREET CAR.....
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