LS1TECH - Camaro and Firebird Forum Discussion

Generation IV External Engine LS2 | LS3 | LS7 | L92 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

LS2 Swap with 1 wire Alternator

Thread Tools
 
Search this Thread
 
Old Nov 9, 2020 | 08:08 PM
Share
  #1  
ShawnHarris1968's Avatar
ShawnHarris1968
Thread Starter
Registered User
 
Joined: Nov 2020
Posts: 2
Likes: 0
Default LS2 Swap with 1 wire Alternator
New to LS1Tech and have searched all over for some technical answers, I'm hoping someone here can help. I have a 1968 Nova that I am doing an LS Swap on. I purchased the GM Connect and Cruise package with the LS 376 with the T56 Tranny. I added the billet serpentine system with the one wire alternator. One of the questions I have is hooking up the "Gen" wire from the LS2 computer to the alternator. Since it is a one wire alternator I have a cable ran to my battery to the alternator but I don't know what to do with the "Gen" wire. I'm not sure what the purpose of the wire is and whether I need to hook it up or not. My thoughts are it does not need to be hooked up. Thoughts?
Reply
0
Old Nov 18, 2020 | 09:05 AM
Share
  #2  
Project GatTagO's Avatar
Project GatTagO
TECH Senior Member
20 Year Member
Liked
Loved
Top Answer: 1
iTrader: (7)
 
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Default
Since you are not using a LS alternator (god knows why not...) you do not need the "Gen" wire in the GMPP harness.

Andrew
Reply
0
Old Nov 19, 2020 | 09:22 AM
Share
  #3  
ShawnHarris1968's Avatar
ShawnHarris1968
Thread Starter
Registered User
 
Joined: Nov 2020
Posts: 2
Likes: 0
Default
Thanks Andrew
Reply
0
Old Nov 19, 2020 | 09:48 AM
Share
  #4  
fastraiderX's Avatar
fastraiderX
Teching In
Veteran: Army
10 Year Member
 
Joined: Apr 2014
Posts: 32
Likes: 0
From: covington,pa
Default
hi i have a dr44g alt from a 2002 chevy tahoe i put the motor which is a 5.3 in my 80 chevy malibu im running a carb no computer the alt has a 2 pin plug can i wire it to the malibus wiring or do i need a doide that everyone keeps telling i need
Reply
0
Old Nov 19, 2020 | 09:54 AM
Share
  #5  
Project GatTagO's Avatar
Project GatTagO
TECH Senior Member
20 Year Member
Liked
Loved
Top Answer: 1
iTrader: (7)
 
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Default
Originally Posted by fastraiderX
hi i have a dr44g alt from a 2002 chevy tahoe i put the motor which is a 5.3 in my 80 chevy malibu im running a carb no computer the alt has a 2 pin plug can i wire it to the malibus wiring or do i need a doide that everyone keeps telling i need
Are you sure your alternator has a two pin connector?
Reply
0
Old Nov 19, 2020 | 09:57 AM
Share
  #6  
fastraiderX's Avatar
fastraiderX
Teching In
Veteran: Army
10 Year Member
 
Joined: Apr 2014
Posts: 32
Likes: 0
From: covington,pa
Default
yes i was told just to hook to the battery and dont use the 2 pin plug
Reply
0
Old Nov 19, 2020 | 09:59 AM
Share
  #7  
Project GatTagO's Avatar
Project GatTagO
TECH Senior Member
20 Year Member
Liked
Loved
Top Answer: 1
iTrader: (7)
 
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Default
Originally Posted by fastraiderX
yes i was told just to hook to the battery and dont use the 2 pin plug
If it has a two pin plug, it's not a 2002 alternator
Reply
0

Trending Topics

Old Nov 19, 2020 | 10:06 AM
Share
  #8  
fastraiderX's Avatar
fastraiderX
Teching In
Veteran: Army
10 Year Member
 
Joined: Apr 2014
Posts: 32
Likes: 0
From: covington,pa
Default
thats the only thing i have maybe its earlier one thats what on the motor
Reply
0
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Nov 19, 2020 | 10:08 AM
Share
  #9  
Project GatTagO's Avatar
Project GatTagO
TECH Senior Member
20 Year Member
Liked
Loved
Top Answer: 1
iTrader: (7)
 
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Default
Originally Posted by fastraiderX
thats the only thing i have maybe its earlier one thats what on the motor
Post a picture. I'd say it's later.
Reply
0
Old Nov 19, 2020 | 10:15 AM
Share
  #10  
fastraiderX's Avatar
fastraiderX
Teching In
Veteran: Army
10 Year Member
 
Joined: Apr 2014
Posts: 32
Likes: 0
From: covington,pa
Default
im trying to post the pic but it tells me its to big of a file
Reply
0
Old Nov 19, 2020 | 10:16 AM
Share
  #11  
Project GatTagO's Avatar
Project GatTagO
TECH Senior Member
20 Year Member
Liked
Loved
Top Answer: 1
iTrader: (7)
 
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Default
Originally Posted by fastraiderX
im trying to post the pic but it tells me its to big of a file
I can't help you with everything. I'm sure Google can help. Make the file smaller.
Reply
0
Old Nov 20, 2020 | 03:33 AM
Share
  #12  
Joystick's Avatar
Joystick
Staging Lane
5 Year Member
 
Joined: Sep 2017
Posts: 80
Likes: 6
Default
Originally Posted by ShawnHarris1968
New to LS1Tech and have searched all over for some technical answers, I'm hoping someone here can help. I have a 1968 Nova that I am doing an LS Swap on. I purchased the GM Connect and Cruise package with the LS 376 with the T56 Tranny. I added the billet serpentine system with the one wire alternator. One of the questions I have is hooking up the "Gen" wire from the LS2 computer to the alternator. Since it is a one wire alternator I have a cable ran to my battery to the alternator but I don't know what to do with the "Gen" wire. I'm not sure what the purpose of the wire is and whether I need to hook it up or not. My thoughts are it does not need to be hooked up. Thoughts?
The two wire alternator charging is PWM-controlled by the ECU. If you just hook it up with the Bat+ it will go to default, approx 13.7 Volts which might not be enough to charge the battery.
There is a good thread on the Corvette forum.
Search ”2 pin 2006 + alternator. Don’t throw it away”

https://ls1tech.com/forums/conversio...hrow-away.html
Reply
0
Old Nov 21, 2020 | 09:40 AM
Share
  #13  
fastraiderX's Avatar
fastraiderX
Teching In
Veteran: Army
10 Year Member
 
Joined: Apr 2014
Posts: 32
Likes: 0
From: covington,pa
Default
yes i see what they are talking about but im nit running a computer or ecu all i have is the msd box and im running a carb
Reply
0
Old Nov 21, 2020 | 10:58 AM
Share
  #14  
Joystick's Avatar
Joystick
Staging Lane
5 Year Member
 
Joined: Sep 2017
Posts: 80
Likes: 6
Default
Originally Posted by fastraiderX
yes i see what they are talking about but im nit running a computer or ecu all i have is the msd box and im running a carb

yea, but if you read the whole thread there is a way to get it to work with a PWM generator. Or with the Arduino nano if you don’t have a 5V output. (Arduino 12V supply)
Reply
0
Old Nov 22, 2020 | 10:14 AM
Share
  #15  
fastraiderX's Avatar
fastraiderX
Teching In
Veteran: Army
10 Year Member
 
Joined: Apr 2014
Posts: 32
Likes: 0
From: covington,pa
Default


this is what i have
Reply
0
Back to Subforum
Generation IV External Engine
View Next Unread
Rod mod for boost?




Advanced Search

All times are GMT -5. The time now is 10:32 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE