One wire alternator ??

[Highbanked Hauler]

 In looking for a new alternator I see that some of them have a "one wire" hookup.. What is the purpose and which wire is hooked to it ? Thanks..

[nvrbdn]

We were having all kinds of problems with Steve's 37 Plymouth with a 318. The alternator made it easy and works great. It bypasses all the charging system. The alternator grounds itself on the engine block, and the single wire heads to the  positive post. I took the wire to the firewall and hooked it up to a Junction that had a large positive wire that headed back to the battery.

[TommyGun]

They are internally regulated so the one wire is just a fused 12v back to either the battery or starter relay. I have a powermaster on my 68 and it works very well.

[mopar0166]

switched to a power master one wire alt and got rid of the ballast, volt reg and assorted wiring. 

[Chargen69]

i love mine

[TommyGun]

If you order one pay attention to if you have a single or dual pulley and order accordingly.  I neglected to do that so I had to take my new alternater apart and press on my old pulley.

[Highbanked Hauler]

If you order one pay attention to if you have a single or dual pulley and order accordingly.  I neglected to do that so I had to take my new alternater apart and press on my old pulley.

   So the advantage is limited add on electronics ?

[TommyGun]

[/quote]

   So the advantage is limited add on electronics ?
[/quote]

Not sure what you mean but what I'm saying is mopar alternators are more difficult than most to switch pulleys so order the right one to start with

[TexasStroker]

Yes, the main advantage is simplifying installation with an internally regulated alternator as opposed to having the stock style and corresponding externally regulated components and wiring.
^That sentence makes it sound way more complex than it is, lol.  Less wire, less mess, easier install 

[Nacho-RT74]

I'll post this and will leave quietly

http://www.madelectrical.com/electricaltech/onewire-threewire.shtml

( but just will say, in case of reg failure on any of them, the three wire can be "tricked out" to still get juice from alt, being "full fielded" )

[303 Mopar]

I went with this one when I dropped in my 505 ci.  It came highly recommended by some other Mopar guys and I love it.  I've had issues with PowerMaster, so I would avoid them.  This on is pricey, but do it one and do it right.

http://www.qualitypowerauto.com/item_557/Chrysler-Mount-Mega-Amp-Alternator.htm

[MoparRocks]

I went with the high amp Powermaster. 150 amp. Ran 0 gauge straight from the stud to the battery. I haven't had an issue with charging since.

[John_Kunkel]

I went with this one when I dropped in my 505 ci.  It came highly recommended by some other Mopar guys and I love it.  I've had issues with PowerMaster, so I would avoid them.  This on is pricey, but do it one and do it right.

http://www.qualitypowerauto.com/item_557/Chrysler-Mount-Mega-Amp-Alternator.htm

I also run the external regulated version of that and it fits the Mopar brackets...no need to adapt to the GM mounting format like most high output units.

As has been pointed out before, most of the one-wire alternators don't have temperature compensation  like regulators do so they can overcharge in some conditions.

[pipeliner]

I went with this one when I dropped in my 505 ci.  It came highly recommended by some other Mopar guys and I love it.  I've had issues with PowerMaster, so I would avoid them.  This on is pricey, but do it one and do it right.

http://www.qualitypowerauto.com/item_557/Chrysler-Mount-Mega-Amp-Alternator.htm

I also run the external regulated version of that and it fits the Mopar brackets...no need to adapt to the GM mounting format like most high output units.

As has been pointed out before, most of the one-wire alternators don't have temperature compensation  like regulators do so they can overcharge in some conditions.

So is this alternator style also a one wire alt? I'm not good with electrical stuff and trying to figure out what I need for my car and how to do it. Going to have Electric Fans and so forth.

[303 Mopar]

I went with this one when I dropped in my 505 ci.  It came highly recommended by some other Mopar guys and I love it.  I've had issues with PowerMaster, so I would avoid them.  This on is pricey, but do it one and do it right.

http://www.qualitypowerauto.com/item_557/Chrysler-Mount-Mega-Amp-Alternator.htm

I also run the external regulated version of that and it fits the Mopar brackets...no need to adapt to the GM mounting format like most high output units.

As has been pointed out before, most of the one-wire alternators don't have temperature compensation  like regulators do so they can overcharge in some conditions.

So is this alternator style also a one wire alt? I'm not good with electrical stuff and trying to figure out what I need for my car and how to do it. Going to have Electric Fans and so forth.

Yes, 1 wire is an option.  I would call them and tell them what you have as far as accessories go and what you may add so you can get the right alt.  They have great and knowledgable help.

[mopar0166]

the one wire alt from power master is extremely easy to install and their is no more need to use the stock external regulator and ballast any more.  its basically one wire to battery and making sure to change you other feeds if its a stock harness.

[pipeliner]

the one wire alt from power master is extremely easy to install and their is no more need to use the stock external regulator and ballast any more.  its basically one wire to battery and making sure to change you other feeds if its a stock harness.

Which Alt. Did you use and what other feeds are you talking about. Thanks!

[mopar0166]

its been a while since I looked at a stock harness you just need to look over a stock wiring harness diagram and look at removing the external regulator and installing a wire to battery probably 0 gauge.  I haven't ran a stock charging system in years because of regulator issues etc.   

[pipeliner]

Alright Thanks!