Helpful Relay Diagrams - Vintage Mustang Forums
Vintage Mustang Forum
HomeForumGalleryClassifiedsAbout UsAdvertiseContact Us
» Auto Insurance
» Featured Product
Go Back   Vintage Mustang Forums > General Discussion > Mod and Custom Forum
Vintage-Mustang.com is the premier Ford Mustang Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools
Old 01-15-2013, 11:56 AM   #1 (permalink)
Senior Member
 
buening's Avatar
 
Join Date: Sep 2000
Location: Stinky Town, IL
Posts: 8,572
Default Helpful Relay Diagrams

I found this PDF of relay diagrams that some may find helpful in their projects. Might be something you bookmark for future reference

http://dlcparts.com/images/BoschGuide.pdf
__________________
70 Mach 1 - 351w/T-56
70 SportsRoof - 302/C4
05 F150 FX4
06 BMW 530xi

T56 Conversion
DIY Ron Morris-like Motor Mounts
DIY Engine Crossmember
DIY Camber Eccentric Eliminator Plates
buening is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-15-2013, 12:17 PM   #2 (permalink)
Senior Member
 
DrStang's Avatar
 
Join Date: Apr 2001
Location: Palm Springs, California
Posts: 2,075
Default

Thanks for the link! I'll 'relay' this over to some of my car buddies.
__________________
"A good friend will help you move. A great friend will help you move a dead body"

1965 A-Code Fastback
Built, September 14, 1964 (San Jose)
Viper red, White/red interior
TCP R&P, G Bar rear 4 link/w shockwaves
Global West Upper/Lower/Strut Rods
Ride-Tech Air ride
4 wheel Cobra disc brakes/Hydroboost
363 Stroker/Paxton Supercharger
Mass-Flo EFI
Owned since 1983
DrStang is offline   Reply With Quote Quick reply to this message
Old 01-15-2013, 01:24 PM   #3 (permalink)
Supporting Member
Just some guy
 
GypsyR's Avatar
 
Join Date: Jun 2001
Location: SC foothills, USA
Posts: 12,596
Default

Nice! Thanks.
__________________
11. If thou be not absolutely sure of thy facts, thou shalt Google before posting thine answer.
GypsyR is offline   Reply With Quote Quick reply to this message
Old 01-15-2013, 01:31 PM   #4 (permalink)
Supporting Member
Member
 
Join Date: Sep 2010
Location: Burkburnett, TX
Posts: 35
Default

Great link, thanks.
__________________
Stu King

TOMs67 is offline   Reply With Quote Quick reply to this message
Old 01-15-2013, 04:02 PM   #5 (permalink)
Senior Member
 
GT289's Avatar
 
Join Date: Sep 2006
Location: Socal
Posts: 3,618
Default

So that's how the cops do that alternating headlight deal.......
__________________
As the drill sergeant said, "I taught you everything you know. I didn't teach you everything I know."

"Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so."
- Douglas Adams
GT289 is offline   Reply With Quote Quick reply to this message
Old 01-15-2013, 04:06 PM   #6 (permalink)
Senior Member
 
buening's Avatar
 
Join Date: Sep 2000
Location: Stinky Town, IL
Posts: 8,572
Default



I liked the wipers on/headlights on diagram. With the new cars having these automatic, I tend to forget to turn on the headlights when the wipers are on.
__________________
70 Mach 1 - 351w/T-56
70 SportsRoof - 302/C4
05 F150 FX4
06 BMW 530xi

T56 Conversion
DIY Ron Morris-like Motor Mounts
DIY Engine Crossmember
DIY Camber Eccentric Eliminator Plates
buening is offline   Reply With Quote Quick reply to this message
Old 01-15-2013, 10:25 PM   #7 (permalink)
Senior Member
 
Join Date: Dec 2000
Location: Washington
Posts: 673
Default

Awesome! I love this stuff.

But can someone explain how the "STARTER DISABLE/CIGARETTE LIGHTER OPERATIVE" one works on page 16? I may be crazy, but it looks like they drew the wiring diagram wrong... Post 86 on either relay will never see 12V, so neither relay will ever activate... The "key side starter should not "jump" the wire that links 86 and 86 together. Instead, it should splice into it. Then they system works.
__________________
1968 C Code Coupe - Getting a 289 and AOD - ON HOLD
1968 C Code Fastback - Getting a 351W and Tremec TKO 5 Speed - WORK IN PROGRESS!
thespazardman is offline   Reply With Quote Quick reply to this message
Old 01-15-2013, 10:31 PM   #8 (permalink)
Senior Member
 
Join Date: Dec 2000
Location: Washington
Posts: 673
Default

Quote:
Originally Posted by thespazardman View Post
Awesome! I love this stuff.

But can someone explain how the "STARTER DISABLE/CIGARETTE LIGHTER OPERATIVE" one works on page 16? I may be crazy, but it looks like they drew the wiring diagram wrong... Post 86 on either relay will never see 12V, so neither relay will ever activate... The "key side starter should not "jump" the wire that links 86 and 86 together. Instead, it should splice into it. Then they system works.
Oh, and I'm definitely doing the "stealth starter interrupt". Like the idea that if you try to start my car without finding the switch, itll honk at you when you turn the key... Hehe.
__________________
1968 C Code Coupe - Getting a 289 and AOD - ON HOLD
1968 C Code Fastback - Getting a 351W and Tremec TKO 5 Speed - WORK IN PROGRESS!
thespazardman is offline   Reply With Quote Quick reply to this message
Old 01-16-2013, 08:35 AM   #9 (permalink)
Senior Member
 
buening's Avatar
 
Join Date: Sep 2000
Location: Stinky Town, IL
Posts: 8,572
Default

Quote:
Originally Posted by thespazardman View Post
Awesome! I love this stuff.

But can someone explain how the "STARTER DISABLE/CIGARETTE LIGHTER OPERATIVE" one works on page 16? I may be crazy, but it looks like they drew the wiring diagram wrong... Post 86 on either relay will never see 12V, so neither relay will ever activate... The "key side starter should not "jump" the wire that links 86 and 86 together. Instead, it should splice into it. Then they system works.
Its a ground activated relay system, meaning the ground path must be complete in order for the relays to energize. When the lighter is removed, the ground path is not provided on the 30 post in order to activate the lighter's relay. Once the lighter is put in place and the ground path from the lighter enters the 30 post, it energizes the relay and switches from the 87a 12v to the 87 ground, which then completes the ground circuit between 85 and 86 post of the starter relay, which then energizes the coil and flips from the 30 post-to-blank 87a to the 30post-to-87.

Many alarm systems use a ground activated relay system instead of a 12v activated system (think hood and door switches).
__________________
70 Mach 1 - 351w/T-56
70 SportsRoof - 302/C4
05 F150 FX4
06 BMW 530xi

T56 Conversion
DIY Ron Morris-like Motor Mounts
DIY Engine Crossmember
DIY Camber Eccentric Eliminator Plates
buening is offline   Reply With Quote Quick reply to this message
Old 01-16-2013, 08:58 AM   #10 (permalink)
Senior Member
 
j persons's Avatar
 
Join Date: Aug 2010
Location: Natchitoches, La
Posts: 631
Default

When I built the FFR,I used relays on just about everything. Here's a photo of the main relay/CB board I used in the Cobra. The controlled the hi/lo beams, fuel pump and fans. The board fit in the engine compartment, and was hidden from view.

Installed:

__________________
John
'97 TBird project. AED supercharger, forged bottom end. Runs high 11's, when it runs.
j persons is offline   Reply With Quote Quick reply to this message
Old 01-16-2013, 03:23 PM   #11 (permalink)
Senior Member
 
Join Date: Dec 2000
Location: Washington
Posts: 673
Default

Quote:
Originally Posted by buening View Post
Its a ground activated relay system, meaning the ground path must be complete in order for the relays to energize. When the lighter is removed, the ground path is not provided on the 30 post in order to activate the lighter's relay.
But the 30 post on the lighter relay has no affect on the lighter relay activation.

You sound like you really know your stuff, so perhaps I'm misunderstanding, but are you assuming that the "key side starter" is spliced into the wire that connects both relays at post 86? If so, then i agree with you. If not, well, then I'm lost. Nothing new
__________________
1968 C Code Coupe - Getting a 289 and AOD - ON HOLD
1968 C Code Fastback - Getting a 351W and Tremec TKO 5 Speed - WORK IN PROGRESS!
thespazardman is offline   Reply With Quote Quick reply to this message
Old 01-16-2013, 06:22 PM   #12 (permalink)
Senior Member
 
buening's Avatar
 
Join Date: Sep 2000
Location: Stinky Town, IL
Posts: 8,572
Default

I'm trying to remember how these cigarette lighters operate, but here is how I read the diagram. My thought was without the lighter inserted, there is no ground (essentially a dead 30 post) or basically a break in the shown lighter ground wire and the 30 post wire. Insert the lighter and the ground path from the shown lighter ground wire goes through the 30 post, through the 87 post, then onto the next relay 85 post, through 86 post, then back onto the lighter relays 86 post and through the 85 post to the relay's ground wire. Without that continuous path provided by the inserted lighter, the lighter relay contact doesn't energize and will be stuck on the 87a 12V being passed to the 30 post and onto the lighter.

Now how the lighter itself operates I can't recall....been forever since I've even looked that those things! I believe the lighter would have to be pushed in as if you were getting it heated up for use.

Also, key side starter is what is attached to the 30. This is basically the wire at your ignition switch that goes to the starter solenoid (brown I think??), in which you would cut and put one end on the 30 and the other on 87.

Edit: I think the lighters work as a bit of a short circuit, as in when they are pushed in the 12v wire and the ground get connected with a copper resistance between, which heats things up. So by pushing in the lighter in this instance, the ground path gets completed. I'm not sure how the lighter ever operates though with this diagram.
__________________
70 Mach 1 - 351w/T-56
70 SportsRoof - 302/C4
05 F150 FX4
06 BMW 530xi

T56 Conversion
DIY Ron Morris-like Motor Mounts
DIY Engine Crossmember
DIY Camber Eccentric Eliminator Plates

Last edited by buening; 01-16-2013 at 06:29 PM.
buening is offline   Reply With Quote Quick reply to this message
Old 01-16-2013, 10:35 PM   #13 (permalink)
Senior Member
 
nstaller's Avatar
 
Join Date: Oct 2010
Location: Mobile, Al
Posts: 130
Default

Here's my 2c
30,87a and 87 are the switch portion of the relay (they are not connected internally to 85 or 86). 87a is normally closed(30 and 87a connected when relay is not energized) when the relay is energized 30 and 87 are connected. The relay will not operate until 85 and 86 have 12v and grnd connected to them. The diagram should show the key side of the starter going to both 86's and 30 on the starter relay that way it is only hot in the start position,if it isnt connected to a wire that is hot in the run position only the cig lighter wont work because the relays would be energized anytime the key was on.
It appears that when the key is turned to start the cig lighter relay will send the ground from cig lighter through 30 and 87 to 85 on the starter relay which in turn will energize the starter relay and send the key signal from 30 to 87 which will allow the starter to function. once the key is released both the relays will be "off" and the cig lighter will work because 30 and 87a will be connected. I can wire it up on the bench and test this if needed.

Ken
Attached Images
File Type: jpg spdt relay.jpg (13.8 KB, 9 views)

Last edited by nstaller; 01-16-2013 at 10:52 PM.
nstaller is offline   Reply With Quote Quick reply to this message
Old 01-17-2013, 12:54 AM   #14 (permalink)
Senior Member
 
Join Date: Dec 2000
Location: Washington
Posts: 673
Default

Quote:
Originally Posted by nstaller View Post
Here's my 2c
30,87a and 87 are the switch portion of the relay (they are not connected internally to 85 or 86). 87a is normally closed(30 and 87a connected when relay is not energized) when the relay is energized 30 and 87 are connected. The relay will not operate until 85 and 86 have 12v and grnd connected to them. The diagram should show the key side of the starter going to both 86's and 30 on the starter relay that way it is only hot in the start position,if it isnt connected to a wire that is hot in the run position only the cig lighter wont work because the relays would be energized anytime the key was on.
It appears that when the key is turned to start the cig lighter relay will send the ground from cig lighter through 30 and 87 to 85 on the starter relay which in turn will energize the starter relay and send the key signal from 30 to 87 which will allow the starter to function. once the key is released both the relays will be "off" and the cig lighter will work because 30 and 87a will be connected. I can wire it up on the bench and test this if needed.

Ken
That's what i was thinking, too. So the wiring diagram IS wrong Who the man? I da man!
__________________
1968 C Code Coupe - Getting a 289 and AOD - ON HOLD
1968 C Code Fastback - Getting a 351W and Tremec TKO 5 Speed - WORK IN PROGRESS!
thespazardman is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Vintage Mustang Forums forums, you must first register.
Please enter your desired user 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.



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 Off


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 01:33 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.