Relay Help needed - 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 04-21-2011, 09:14 PM
Registered User
 
Last photo:
Join Date: Dec 2007
Location: SW Washington
Posts: 88
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Relay Help needed

I need some serious relay wiring help
Could someone help me wire this correctly..????
The fuel pump, radiator fan and vacuum pump need to be turned on when the key is in the 'on' position.
With key in the 'start' position the radiator fan and the vacuum pump turned off.
The horn and headlights are controlled with switches.
Can some kind electrical wizard help me with this drawing ,, please
Attached Thumbnails
Click image for larger version

Name:	Relays 001.jpg
Views:	68
Size:	84.3 KB
ID:	54580  

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-21-2011, 10:11 PM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,837
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
Here is a couple of sites to help you with relays.

One
Two
Three
Vince
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-22-2011, 10:18 AM
Registered User
 
Last photo:
Join Date: Dec 2007
Location: SW Washington
Posts: 88
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
More specifically, how do I wire a relay so the device will turn off when the key is moved to the start position from the on position..
So, turning off a device momentarily
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-22-2011, 10:43 AM
vicrod's Avatar
life is a ride
 

Last journal entry: 2014
Last photo:
Join Date: Nov 2005
Location: Telford, PA
Age: 71
Posts: 1,310
Wiki Edits: 0

Thanks: 0
Thanked 56 Times in 52 Posts
An additional relay will be needed to operate (energize) whenever the Ignition switch is in the start position.
This relay coil (85,86) will be wired to ground and start.
The normally closed contacts (30,87a) will be wired to open the common circuit or common ground feeding the coils of the relays controlling the pump and fan.
When the ignition switch is returned to ON the relay will deenergize thus restoring the pump and fan.

vicrod
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-22-2011, 11:37 AM
Joe G's Avatar
Registered user
 
Last photo:
Join Date: Nov 2008
Location: St. Paul, MN
Posts: 588
Wiki Edits: 0

Thanks: 78
Thanked 34 Times in 33 Posts
Quote:
Originally Posted by dar130
More specifically, how do I wire a relay so the device will turn off when the key is moved to the start position from the on position..
So, turning off a device momentarily
Another way to make the relay on when the ignition is on, but cut out while cranking, is to wire the 85 terminal on the relay to ignition-on power, and wire the 86 terminal to ground through the starter solenoid via the crank wire

Then wire the load side of the relay as stated in the links above.


Hope this helps.....
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-22-2011, 05:08 PM
EOD Guy's Avatar
Registered User
 
Last photo:
Join Date: Aug 2010
Location: Alabama
Posts: 2,006
Wiki Edits: 0

Thanks: 1
Thanked 123 Times in 114 Posts
This will do what you want it's in pwr point
Attached Files
File Type: pdf start cut out relay.pdf (86.8 KB, 75 views)
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 04-22-2011, 08:25 PM
Hoptup32's Avatar
Registered User
 
Last photo:
Join Date: Jul 2004
Location: Virginia Beach, VA
Posts: 76
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Here is a simplified diagram showing the relay setup
Attached Files
File Type: pdf Relay Setup.pdf (297.2 KB, 91 views)
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 04-22-2011, 09:15 PM
Registered User
 
Last photo:
Join Date: Dec 2007
Location: SW Washington
Posts: 88
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Throwing a HUGE thank YOU ...
it works...
THis site is the BEST !!!!

THANK YOU ... THANK YOU THANK YOU
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 04-23-2011, 06:16 AM
EOD Guy's Avatar
Registered User
 
Last photo:
Join Date: Aug 2010
Location: Alabama
Posts: 2,006
Wiki Edits: 0

Thanks: 1
Thanked 123 Times in 114 Posts
Nice job 32
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 04-23-2011, 07:26 AM
Hoptup32's Avatar
Registered User
 
Last photo:
Join Date: Jul 2004
Location: Virginia Beach, VA
Posts: 76
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks EOD and dar130

I love it when a plan comes together.....
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 04-23-2011, 10:53 AM
EOD Guy's Avatar
Registered User
 
Last photo:
Join Date: Aug 2010
Location: Alabama
Posts: 2,006
Wiki Edits: 0

Thanks: 1
Thanked 123 Times in 114 Posts
What did you use to create the dia? I use pwr point it, works but sometimes is time consuming...hence my simplified dia.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 04-23-2011, 12:21 PM
Hoptup32's Avatar
Registered User
 
Last photo:
Join Date: Jul 2004
Location: Virginia Beach, VA
Posts: 76
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
That diagram was created in AutoCad, printed, and I scanned the print into a pdf file for uploading. I use AutoCad at work everyday, so its convenient and quicker for me to generate drawings. I haven't tried powerpoint, but I've tried Mircosoft Paint and a few other programs with limited results. There may be some freeware CAD programs that may be found to produce similar results.
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
MSD Relay V305 Electrical 1 12-04-2008 06:11 PM
4 pin relay ? butch27 Electrical 9 11-09-2006 05:34 PM
Relay Help Needed MI2600 Electrical 2 08-20-2006 09:07 PM
Elec. fuel pump relay needed? upstand2 Electrical 4 05-10-2005 05:21 AM
using a relay w/ msd Slant3 Electrical 0 06-11-2004 08:10 PM


All times are GMT -6. The time now is 07:40 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.