wiring-in alternator and accessories - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 06-18-2008, 02:06 PM
Registered User
 
Join Date: Nov 2004
Location: California
Age: 67
Posts: 831
Wiki Edits: 0

Thanks: 27
Thanked 23 Times in 20 Posts
wiring-in alternator and accessories

Hi again. I have several questions. This is a GM type application using a 10SI alternator.

1 -- DocVette advocated wiring the small red alternator wire to the horn relay "hot" connection. I think most wiring kits simply jumper over to the Alternator's "batt" terminal. Is there a reason to set this up with a longer lead, should I perhaps consider even running this lead from switched power?

2 -- I plan to use a voltage regulator, and a choke relay. I believe the choke relay should be triggered by the voltage sensing wire, and that the voltage regulator should be wired with one pole to the VS lead, and the other to a good ground. Is this correct?

3 -- Is it possible to use both a voltmeter and an idiot light (one is built into my voltmeter, but I'm not sure how or where to hook it up)?

4 -- Do I need to use an in-line resistor or diode with this setup?

Lastly, if you have (or can easily create) a diagram with alternator, voltmeter, idiot light, resistor or diode if necessary, and electric choke all shown, I'd love to see it.

Thanks in advance.

Pat

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-18-2008, 02:13 PM
Holder350's Avatar
Auto Parts Professional
 
Last photo:
Join Date: Feb 2005
Location: Whitesburg, TN
Posts: 1,037
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Heres a diagram that should help a bit....the GM alt your going to be using has a voltage regulator built into it....no need for a diode or resistor.


Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-18-2008, 02:19 PM
Registered User
 
Join Date: Nov 2004
Location: California
Age: 67
Posts: 831
Wiki Edits: 0

Thanks: 27
Thanked 23 Times in 20 Posts
Thanks. Confirms where the warning light goes, in the event I had a ammeter. But this should function similarly with a voltmeter, I think.

Pat
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-18-2008, 02:24 PM
Holder350's Avatar
Auto Parts Professional
 
Last photo:
Join Date: Feb 2005
Location: Whitesburg, TN
Posts: 1,037
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
nope...if its a volt meter then it just wires, positive and ground to any switched source.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 06-18-2008, 03:37 PM
Registered User
 
Join Date: Nov 2004
Location: California
Age: 67
Posts: 831
Wiki Edits: 0

Thanks: 27
Thanked 23 Times in 20 Posts
So, rather than Voltage Sensing to ground, I should use a switched power source to ground. Off the accesory side, I take it.

Pat
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 06-18-2008, 04:54 PM
Holder350's Avatar
Auto Parts Professional
 
Last photo:
Join Date: Feb 2005
Location: Whitesburg, TN
Posts: 1,037
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
right a voltage meter just senses the voltage that the alt is putting out....lots of newer radios with LCD displays have a voltage gauges built in.....pretty sweet too
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 06-18-2008, 08:42 PM
Registered User
 
Join Date: Aug 2006
Location: Alexandria, VA
Posts: 1,762
Wiki Edits: 0

Thanks: 4
Thanked 66 Times in 64 Posts
The stock GM wiring diagram is a little simpler than the picture (solenoid is on the starter and coil is in the HEI cap), but most of the connections are basically the same.

The full current ammeter connection is much different than I've seen in early '70s GM vehicles. I think Chrysler used a full current ammeter, but GM used some type of comparator circuit to measure amperage. The GM wiring setup was a lot safer because the high amp draw did not go through the wiring to the dash.

If you have GM HEI ignition, you also won't need the ballast resistor shown in the diagram.

Bruce
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 06-18-2008, 11:41 PM
malc's Avatar
Living At The Speed Of Life
 
Last photo:
Join Date: Jun 2003
Location: Espaņa Right Coast
Age: 63
Posts: 3,281
Wiki Edits: 0

Thanks: 100
Thanked 120 Times in 99 Posts
Have a read through The Chevy Main Electrical Power Up System at Madelectrical.
There are also articles on the 10SI alternator and why amp gauges are not desireable in a vehicle.
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Brake light switch wiring... 38 special Electrical 10 09-15-2007 06:54 AM
EZ wiring project zipfactor Electrical 3 05-21-2006 03:55 PM
Alternator Wiring question 65Stanger Electrical 8 04-29-2006 02:28 AM
1956 chevy belair Wiring Diagram NAK Electrical 1 05-12-2005 09:22 PM
Wiring with fiberglass wbmusarra Electrical 1 11-13-2003 05:18 AM


All times are GMT -6. The time now is 08:32 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.