C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

real quick alternator question

Thread Tools
 
Search this Thread
 
Old Jun 26, 2007 | 01:53 PM
  #1  
guitarcrazy02's Avatar
guitarcrazy02
Thread Starter
Drifting
10 Year Member
 
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
Default real quick alternator question



I have a radio noise suppressor that splices into the alternator main power line. There are two hot lines coming from my alternator. I don't know which one is the main line to the battery. Any help would really be great.
Reply
Old Jun 26, 2007 | 01:55 PM
  #2  
IrishJoker's Avatar
IrishJoker
Drifting
15 Year Member
 
Joined: Jul 2005
Posts: 1,891
Likes: 2
From: Baltimore MD
Default

The one with the BLACK Plug cover goes to the Battery.
Reply
Old Jun 26, 2007 | 01:56 PM
  #3  
HO-alts-Rick's Avatar
HO-alts-Rick
Racer
 
Joined: Mar 2006
Posts: 343
Likes: 0
From: Davenport Ia
Default

Originally Posted by IrishJoker
The one with the BLACK Plug cover goes to the Battery.
Reply
Old Jun 26, 2007 | 02:43 PM
  #4  
guitarcrazy02's Avatar
guitarcrazy02
Thread Starter
Drifting
10 Year Member
 
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
Default

Thanks a lot. Just out of curiosity, what's the other plug for?
Reply
Old Jun 26, 2007 | 02:51 PM
  #5  
SIXFOOTER's Avatar
SIXFOOTER
Le Mans Master
Supporting Lifetime Gold
10 Year Member
 
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Default

Thats the Exciter and voltage sense wires. The exciter turns the alternator on and the sense wire detects what the system voltage is ans uses that to determine alternator output
Reply
Old Jun 26, 2007 | 03:14 PM
  #6  
guitarcrazy02's Avatar
guitarcrazy02
Thread Starter
Drifting
10 Year Member
 
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
Default

Man I love this forum. Someone somewhere knows anything you could possibly want to know.
Reply
Old Jun 26, 2007 | 04:31 PM
  #7  
Durango_Boy's Avatar
Durango_Boy
Team Owner
 
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Default

That RFI suppressor will work better if installed inline of the radio's power wire.
Reply
Old Jun 26, 2007 | 07:53 PM
  #8  
HO-alts-Rick's Avatar
HO-alts-Rick
Racer
 
Joined: Mar 2006
Posts: 343
Likes: 0
From: Davenport Ia
Default

Originally Posted by Durango_boy
That RFI suppressor will work better if installed inline of the radio's power wire.

Your alternator already has a capacitor in it for filtering "noise" by putting it in the radio wire it will help suppress any "noise" from other sources.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Jun 26, 2007 | 08:35 PM
  #9  
mrvette's Avatar
mrvette
Team Owner
Active Streak: 120 Days
Liked
Loved
Community Favorite
 
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Default

Originally Posted by HO-alts-Rick

Your alternator already has a capacitor in it for filtering "noise" by putting it in the radio wire it will help suppress any "noise" from other sources.
Yes, that internal cap does knock some of the sharpest spikes off the diode cutoffs...., but it is no panacea....

More expensive amps will not pick up the alt noise....cheeep crap will....complicated issue, not easily explained....

Reply
Old Jun 28, 2007 | 09:46 AM
  #10  
New's Avatar
New
Intermediate
 
Joined: Nov 2005
Posts: 35
Likes: 0
Default

Can you help me!!

I have sb -71 Vette. My alt comes two wires, brown and black/white. Now i wonder which goes where? The alt is marked R1 and 2. Where the brown goes in and what about bl/wh?

Thanks
Reply
Old Jun 28, 2007 | 10:02 AM
  #11  
mrvette's Avatar
mrvette
Team Owner
Active Streak: 120 Days
Liked
Loved
Community Favorite
 
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Default

I forget the orginal GM color codes...but you take a voltmeter, and check which one is hot with key off, that one goes to the MOST clockwise pin when viewed from the back of the alt....many alts have lost their markings, so that is why I referr to MOST CLOCKWISE or least clockwise....

the other wire should have NO voltage on it, turn on the key, don't bother starting the car....the wire should then have voltage on it...if so, that goes to the LEAST clockwise terminal in that connector...
Reply
Old Jun 28, 2007 | 11:04 AM
  #12  
New's Avatar
New
Intermediate
 
Joined: Nov 2005
Posts: 35
Likes: 0
Default

Originally Posted by mrvette
I forget the orginal GM color codes...but you take a voltmeter, and check which one is hot with key off, that one goes to the MOST clockwise pin when viewed from the back of the alt....many alts have lost their markings, so that is why I referr to MOST CLOCKWISE or least clockwise....

the other wire should have NO voltage on it, turn on the key, don't bother starting the car....the wire should then have voltage on it...if so, that goes to the LEAST clockwise terminal in that connector...
Thanks a lot mrvette!!
Reply

Get notified of new replies

To real quick alternator question





All times are GMT -4. The time now is 04:33 AM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-7
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-8
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-9
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE