Brake and Indicator wiring - 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 04-01-2013, 12:43 PM
Registered User
 
Last photo:
Join Date: Sep 2012
Posts: 36
Wiki Edits: 0

Thanks: 4
Thanked 0 Times in 0 Posts
Brake and Indicator wiring

Hi Everyone.

I read a few posts and found a few wiring diagrams on how to wire a 2 filament bulb for the brake lights and indicators. The problem is I dont have the same indicator switch as any of these diagrams and all of them show the brake wiring going through the indicator switch. My indicator switch has one supply and two output positions (Right, Left). If I connect the brake switch as on the diagram, the front indicators will also light up when the brake is applied and when I use the indicators both indicators will flicker. The only way to fix this is to make use of diodes. Any other suggestions?
Attached Thumbnails
Click image for larger version

Name:	Indicator.jpg
Views:	308
Size:	48.6 KB
ID:	72782  

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-01-2013, 02:47 PM
vicrod's Avatar
life is a ride
 

Last journal entry: 2014
Last photo:
Join Date: Nov 2005
Location: Telford, PA
Age: 72
Posts: 1,355
Wiki Edits: 0

Thanks: 0
Thanked 61 Times in 57 Posts
relays

The attached schematic shows typical turn signal switching when a dual filament bulb is used for brakes and turn signals.
The front bulbs must be switched seperatly from the rear.
The switching consists of (2) DPDT switches (double pole double throw, maintained).
If your existing switch must be retained, (2) relays could be used in place of the DPDT switches.
General purpose relays will be adequate for this. 12vdc coil with DPDT 10 amp contact rating.

vicrod
Attached Files
File Type: pdf turn signal simple pdf.pdf (18.5 KB, 156 views)
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-01-2013, 03:48 PM
vicrod's Avatar
life is a ride
 

Last journal entry: 2014
Last photo:
Join Date: Nov 2005
Location: Telford, PA
Age: 72
Posts: 1,355
Wiki Edits: 0

Thanks: 0
Thanked 61 Times in 57 Posts
drawing

This attached schematic shows a relay controlled turn signal arrangement.

vicrod
Attached Files
File Type: pdf turn signal simple using relays pdf.pdf (20.5 KB, 144 views)
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-01-2013, 04:13 PM
Registered User
 
Last wiki edit: Wheelbase database Last photo:
Join Date: Jan 2007
Location: Virginia
Posts: 3,618
Wiki Edits: 1

Thanks: 6
Thanked 163 Times in 150 Posts
Quote:
Originally Posted by Hotrod_Ford View Post
Hi Everyone.

I read a few posts and found a few wiring diagrams on how to wire a 2 filament bulb for the brake lights and indicators. The problem is I dont have the same indicator switch as any of these diagrams and all of them show the brake wiring going through the indicator switch. My indicator switch has one supply and two output positions (Right, Left). If I connect the brake switch as on the diagram, the front indicators will also light up when the brake is applied and when I use the indicators both indicators will flicker. The only way to fix this is to make use of diodes. Any other suggestions?
What turn signal switch are you using? The turn signal switch in nearly every US-made steering column in the last 60 years has separate output terminals for the front and rear turn signal bulbs specifically for this reason. The rear lamps run through the brake switch first, the fronts do not.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-01-2013, 04:21 PM
EOD Guy's Avatar
Registered User
 
Last photo:
Join Date: Aug 2010
Location: Alabama
Posts: 2,129
Wiki Edits: 0

Thanks: 1
Thanked 151 Times in 139 Posts
Here's a dia I drew up awhile back using relays.......

I used a single electronic flasher, nothing special just one that was listed for a 67 Camaro.
I had to use a ON-OFF-ON toggle (DPDT), I couldn't get it to work without it because I needed to turn off the brake circuit when the turn signal was on.
I used a ON-OFF toggle (SPST) for the hazards
I used bosh style 5 pole relays (six total),there better relays for this app, but I used bosh style due to availability. I used some smaller ones that I salvaged from a dodge Dakota. All 6 relays taped together measure 1 ¾” by 1 ¾”
I assumed the brake switch would provide a +12v
How it works……..
Step on the brake (no turn sig) pwr is fed from the brake light switch to the 87a (NC) terminal on Relays 1a and 1b, out thru terminal 30 (Comm) into to the 87a (NC) terminal on Relays 2a and 2b, out thru terminal 30 (Comm) to the rear turn/stop lights……. None of the relays are energized.
Activate left or right turn signal (no brake light) intermittent pwr is fed from the single electronic flasher, thru the turn sig switch to the 87a (NC) terminal on Relay 3a or 3b, (depending Left or Right) and out thru terminal 30 (Comm), front turn light is also connected to terminal 30…… at the same time terminal 30 (Comm) provides power to the 87 (NO) and 86 (Coil) terminal on Relay 2a. Relay 2a activates and sends pwr thru terminal 30 (Comm) to the rear turn/stop light…… both front and rear turn bulbs light and flash….. due to the flasher. At the same time constant pwr is fed from a +12 volt source , thru the turn sig switch to the 86 (Coil) terminal on Relay 1a or 1b, the relay activates and disconnects terminal 30 (Comm).

Activate left or right turn signal and step on the brake….. basically the same as the turn, but when the relay 1a or 1b, activates and disconnects terminal 30 (Comm), which is the brake light feed, the brake light cannot illuminate….. hence the turn signal continues to flash, while the other side brake feed relay is not energized and the brake feed is still connected and the brake light remains on.

Activate the Hazards……. constant pwr is fed from a +12 volt source , thru the Haz switch to the 87 (NO) and 86 (Coil) terminals on Relay 3a and 3b. Relays 3a and 3b activate and flash all four lights…… the brake circuit is still in connected ….. so the brake will over-ride the turns and stay on.

looks and sounds complicated, but really wasn’t that hard to wire up.
Attached Thumbnails
Click image for larger version

Name:	Turn Brake Hazards.jpg
Views:	272
Size:	45.4 KB
ID:	72805  
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-02-2013, 12:59 AM
Registered User
 
Last photo:
Join Date: Sep 2012
Posts: 36
Wiki Edits: 0

Thanks: 4
Thanked 0 Times in 0 Posts
Thanks everyone!!

I will have a look at the diagrams. I'm from South Africa and i'm using a universal indicator lever. Its not really standard for our cars to have a combined indicator and brake light.

Once again thank you for your responses. It difficult to get any response from our local Hotrod site.
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 Switch Wiring smokey626 Electrical 35 06-23-2012 07:39 PM
37 ford after market turns signal indicator and wiring harness conflict 37ford4dr Electrical 3 10-26-2010 03:30 PM
wiring up a highbeam indicator bulb tommer2 Electrical 1 05-10-2008 03:00 PM
Wiring Indicator Light into Circuit JohnTN Electrical 4 11-02-2006 07:53 PM
wiring diagram for brake light/indicator? pcoghlan Electrical 2 06-06-2006 03:58 PM


All times are GMT -6. The time now is 06:27 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.