one wire alternator
#427633
08/03/09 08:02 PM
08/03/09 08:02 PM
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Anonymous
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Anonymous
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can some one tell me how and what i need to do to hook up a one wire alternator into my 66 belvedereII with a big block its a 140 amp alternator and ive got electronic ignition
thanks cliff
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Re: one wire alternator
[Re: 440challenger]
#427637
08/03/09 10:30 PM
08/03/09 10:30 PM
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Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
GTXKen
super gas
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super gas
Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
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Quote:
I ran a 14 gauge wire to the trunk mounted battery with an inline maxi fuse. Why is it better to hook it to the start relay? 
There is no problem with running it back to the trunk but you better have something bigger than a 14, thats smaller than speaker wire, you should be using a 6 or 8 and instead of a fuse you should use a fusable link
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Re: one wire alternator
[Re: GTXKen]
#427638
08/03/09 10:47 PM
08/03/09 10:47 PM
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Joined: Apr 2007
Posts: 4,233
petaluma,ca. u.s.a.
west
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master
Joined: Apr 2007
Posts: 4,233
petaluma,ca. u.s.a.
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There is no problem with running it back to the trunk but you better have something bigger than a 14, thats smaller than speaker wire, you should be using a 6 or 8
I didn't catch that 
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Re: one wire alternator
[Re: 440challenger]
#427639
08/03/09 10:49 PM
08/03/09 10:49 PM
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Anonymous
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Anonymous
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Quote:
I ran a 14 gauge wire to the trunk mounted battery with an inline maxi fuse. Why is it better to hook it to the start relay?
Why would you run a separate wire to the trunk when you already have a nice big fat battery cable going back there, and of all things, one that small?
The MAIN LOAD after initial start and after initial battery recharge is the LOADS IN THE CAR like the AC, rad fan, whatever, not the battery. It's important to have the proper regulated system voltage UP FRONT not dropped through a huge long cable back and forth from the trunk.
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Re: one wire alternator
[Re: 440challenger]
#427640
08/03/09 11:53 PM
08/03/09 11:53 PM
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Joined: Jan 2003
Posts: 31,046
Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,046
Oregon
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Quote:
I ran a 14 gauge wire to the trunk mounted battery with an inline maxi fuse. Why is it better to hook it to the start relay?
Sounds like a good way to start a fire.
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Re: one wire alternator
[Re: GTXKen]
#427643
08/04/09 09:21 AM
08/04/09 09:21 AM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
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master
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Ontario, Canada
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Quote:
Quote:
I ran a 14 gauge wire to the trunk mounted battery with an inline maxi fuse. Why is it better to hook it to the start relay?
There is no problem with running it back to the trunk but you better have something bigger than a 14, thats smaller than speaker wire, you should be using a 6 or 8 and instead of a fuse you should use a fusable link
Speaker wire is right! 140 amp minimum doubled 10
but should be 6 or 4.
and on a race car you must have it isolated from the car by the cut off switch so it allows car to shut off when power switch is turned off
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Re: one wire alternator
[Re: Dodgem]
#427644
08/04/09 07:17 PM
08/04/09 07:17 PM
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Anonymous
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Anonymous
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what bout my balis resistor and my external regulator being as this one is internally regulated how do i by pass them or dont i need to
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Re: one wire alternator
[Re: 440challenger]
#427647
08/05/09 09:18 AM
08/05/09 09:18 AM
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Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
GTXKen
super gas
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super gas
Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
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Quote:
Ok well i checked the wire and its 10 gauge not 14 but i will still get a thicker wire and go to the starter relay lug instead. I have the battery and msd hooked to it now, how much stuff can you have on that one lug before its considered overloaded?
Per MSD the MSD box should not be hooked up directly to the Alt output
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Re: one wire alternator
[Re: AndyF]
#427648
08/05/09 02:30 PM
08/05/09 02:30 PM
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Joined: Feb 2004
Posts: 936
OLD318
super stock
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super stock
Joined: Feb 2004
Posts: 936
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Quote:
The one wire alternators don't really work all that great on a street driven car so you'll want to stay on top of it with a voltmeter.
I'm lost,
Why would'nt a one wire, internally regulated
alternator work good on a street car?
I would bypass the full flow amp guage on the dash per www.madelectrical.com writeup,
and I would definitely run at least an 8 guage wire from the alt to the stud on the starter relay.
But other than those two wiring considerations,
why wouldnt they work?
Am I missing something?
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Re: one wire alternator
[Re: OLD318]
#427649
08/05/09 02:47 PM
08/05/09 02:47 PM
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Joined: Nov 2006
Posts: 2,255
IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,255
IL
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the argument goes that the 1 wire doesn't 'sense' voltage in the correct place, hence you'll actually be running low voltage to most accessories and your alt won't 'see' it.
I have mine wired via 2g to the starter post and draw power for the amp, efi ecu, and fuel pump relay from the same post. When wired this way I don't see any problem. If you wire your 1 wire the old 'tractor style' with the charge wire straight to the battery, then you can potentially have enough voltage drop through the harness that your stuff is running low voltage.
70 Sport Fury
68 Charger
69 Coronet
72 RR
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Re: one wire alternator
[Re: furious70]
#427651
08/05/09 05:38 PM
08/05/09 05:38 PM
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Joined: Feb 2004
Posts: 936
OLD318
super stock
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super stock
Joined: Feb 2004
Posts: 936
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Quote:
the argument goes that the 1 wire doesn't 'sense' voltage in the correct place, hence you'll actually be running low voltage to most accessories and your alt won't 'see' it.
I thought that was only a problem if the 1 wire
alternator was connected directly to the battery terminal. If you do the full flow amp guage bypass (per MAD Electrical writeup) and wire the
alternator to the stud on the starter relay this should not be a problem... at least that's how I
understood it...
See www.madelectrical.com for the discussion of this....
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Re: one wire alternator
[Re: OLD318]
#427652
08/05/09 05:46 PM
08/05/09 05:46 PM
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Joined: Nov 2006
Posts: 2,255
IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,255
IL
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yes old318, that's what I'm saying. Though MAD tries to sell their 3 wire kits rather than tell you how to correctly wire a 1 wire I thought.
I would think that Dak would have a voltage drop to the fans, would be interesting to test with a multimeter.
70 Sport Fury
68 Charger
69 Coronet
72 RR
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