Dyna Glide Models Super Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Sponsored by:
Sponsored by:

Help: brake/turn wires. Which are which?

Thread Tools
 
Search this Thread
 
Old Mar 14, 2011 | 09:23 PM
  #1  
maryland blackout's Avatar
maryland blackout
Thread Starter
|
Tourer
Joined: Jul 2010
Posts: 426
Likes: 2
From: Annapolis, MD
Default Help: brake/turn wires. Which are which?

I have the tail lamp harness for my '02 fxd in my hand and need to know the functions of the wires so i can relocate the lights. I have the shop manual but either I'm missing something or the answers i need are in the electrical manual whih i don't have nor do i care to buy. There are 6 wires on this harness and then each of the turn sigs has 2 wires. Do any of you knowledgeable folk know which wires are what? Below are the colors for each as described in the manual:

tail lamp harness:
orange/white
brown
blue
red/yellow
violet
black

turn signals:
violet/brown
black

My next concern is that there are 6 wires in this harness and that my new after market tail light and the stock signals have 7 wires combined: 3 on the tail light (red, blue, black) and 4 on the signals (each have a black and a violet/brown as written above.) If anyone has the solution to that, please chime in. Thanks in advance. This is getting down to the last part of my winter mods and it's driving me nuts.
 
Reply
Old Mar 15, 2011 | 01:43 PM
  #2  
FXD2003Rider's Avatar
FXD2003Rider
Administrator Emeritus
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Feb 2007
Posts: 9,206
Likes: 970
From: Harmelen (The Netherlands, Europe)
Riders Club Member
Default

Originally Posted by maryland blackout
I have the tail lamp harness for my '02 fxd in my hand and need to know the functions of the wires so i can relocate the lights. I have the shop manual but either I'm missing something or the answers i need are in the electrical manual whih i don't have nor do i care to buy. There are 6 wires on this harness and then each of the turn sigs has 2 wires. Do any of you knowledgeable folk know which wires are what? Below are the colors for each as described in the manual:

tail lamp harness:
orange/white
brown
blue
red/yellow
violet
black

turn signals:
violet/brown
black

My next concern is that there are 6 wires in this harness and that my new after market tail light and the stock signals have 7 wires combined: 3 on the tail light (red, blue, black) and 4 on the signals (each have a black and a violet/brown as written above.) If anyone has the solution to that, please chime in. Thanks in advance. This is getting down to the last part of my winter mods and it's driving me nuts.
Go here to find some wiring diagrams:

***Dyna Models Wiring Diagram Links Index***

tail lamp harness:
  • orange/white = running light HDI
  • brown = right turn feed
  • blue = running light domestic
  • red/yellow = brake light
  • violet = left turn feed
  • black = ground
turn signals:
  • violet/brown = turn signal feed
  • black = ground

If the new tail light has a dual filament fitting my best guess for the wiring would be:
  • black = ground
  • red= stop lamp
  • blue = running light

You could use a multi-meter to find out which wire is for ground....
 

Last edited by FXD2003Rider; Mar 15, 2011 at 01:48 PM.
Reply
Old Mar 15, 2011 | 01:58 PM
  #3  
maryland blackout's Avatar
maryland blackout
Thread Starter
|
Tourer
Joined: Jul 2010
Posts: 426
Likes: 2
From: Annapolis, MD
Default

Originally Posted by FXD2003Rider
Go here to find some wiring diagrams:

***Dyna Models Wiring Diagram Links Index***



tail lamp harness:
  • orange/white = running light HDI
  • brown = right turn feed
  • blue = running light domestic
  • red/yellow = brake light
  • violet = left turn feed
  • black = ground
turn signals:
  • violet/brown = turn signal feed
  • black = ground
If the new tail light has a dual filament fitting my best guess for the wiring would be:
  • black = ground
  • red= stop lamp
  • blue = running light
You could use a multi-meter to find out which wire is for ground....
Pardon my complete ignorance but what is the difference between the HDI and the domestic running light wires? And do you have any recommendations on the best way to ground out the lights? Also, i believe you posted a thread with pictures on disassembeling your turn signal housings. I need to drill holes in mine to re-route the wires and would appreciate a link to that. Thanks again for the help.
 

Last edited by maryland blackout; Mar 15, 2011 at 02:03 PM.
Reply
Old Mar 15, 2011 | 02:06 PM
  #4  
Robotech's Avatar
Robotech
Outstanding HDF Member
Joined: Dec 2010
Posts: 2,036
Likes: 8
From: Temecula, CA
Default

HDI = Harley Davidson International (Bikes sold outside the US)

Domestic = Harley's sold within the US.

So far I have not used the orange/white for anything since I have a domestic bike. If you do to just wire up your running light (blue on the new tail light) to the blue wire and the rest per FXD2003Rider's suggestions and you should be golden.
 
Reply
Old Mar 15, 2011 | 02:24 PM
  #5  
DOMAPOI's Avatar
DOMAPOI
Stellar HDF Member
Photogenic
Joined: Feb 2011
Posts: 3,335
Likes: 27
From: San Diego, CA
Default

You ground out the lights with the black wire. The black wire is ground for all the lights in the rear.

And you don't need a multi-meter to check which light is which. you can buy a cheap light tester that has a body which holds a 12 volt light bulb in it and a sharp point on the end of the body. The other end of the body has a wire coming out of it that has an alligator clip on the end of it. Here is a link to one model on the web:
http://www.google.com/products/catal...=0CJYBEPMCMAc#

I am not endorsing any model of tester nor any place to buy them. You should be able to find these at any auto parts, hardware or general store that sells auto stuff for a very reasonable price and probably cheaper than the one in the link I gave your for an example.

As for testing:
Just clip the alligator clip to the black wire (your ground) or any well grounded part of your frame or engine (most wires on the tester are long enough for that), turn on your system, activate the function you are trying to find and then touch each of the wires in your harness. The first one you should look for is the running light. For that you just turn on your ignition switch, make sure no turn signals are turned on and the brake light is not activated. Touch each wire and the one that lights will be your running light. Now that you know what wire is your running light you won't get it confused with the brake light when you activate that switch and find which new wire lights. As far as the turn signal light they should be obvious since they will each flash. Just activate one turn signal at a time and find out which one is flashing.
 
Reply
Old Mar 15, 2011 | 03:55 PM
  #6  
FXD2003Rider's Avatar
FXD2003Rider
Administrator Emeritus
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Feb 2007
Posts: 9,206
Likes: 970
From: Harmelen (The Netherlands, Europe)
Riders Club Member
Default

Originally Posted by DOMAPOI
You ground out the lights with the black wire. The black wire is ground for all the lights in the rear.

And you don't need a multi-meter to check which light is which. you can buy a cheap light tester that has a body which holds a 12 volt light bulb in it and a sharp point on the end of the body. The other end of the body has a wire coming out of it that has an alligator clip on the end of it. Here is a link to one model on the web:
http://www.google.com/products/catal...=0CJYBEPMCMAc#

I am not endorsing any model of tester nor any place to buy them. You should be able to find these at any auto parts, hardware or general store that sells auto stuff for a very reasonable price and probably cheaper than the one in the link I gave your for an example.

As for testing:
Just clip the alligator clip to the black wire (your ground) or any well grounded part of your frame or engine (most wires on the tester are long enough for that), turn on your system, activate the function you are trying to find and then touch each of the wires in your harness. The first one you should look for is the running light. For that you just turn on your ignition switch, make sure no turn signals are turned on and the brake light is not activated. Touch each wire and the one that lights will be your running light. Now that you know what wire is your running light you won't get it confused with the brake light when you activate that switch and find which new wire lights. As far as the turn signal light they should be obvious since they will each flash. Just activate one turn signal at a time and find out which one is flashing.
Great write-up on how to use the test light to find out which wire from the main harness is for turn/stop/tail light!

As to the use of a multi meter: I was referring to the wires of the new tail light and not to use it to determine "which light is which".....


Originally Posted by maryland blackout
...Pardon my complete ignorance but what is the difference between the HDI and the domestic running light wires?...
+1 on Robotech's answer!

Originally Posted by maryland blackout
....And do you have any recommendations on the best way to ground out the lights?...
Put a ring terminal on your new tail light's ground wire....




....and connect this ring terminal to one of the bolts inside your rear fender.


Originally Posted by maryland blackout
...Also, i believe you posted a thread with pictures on disassembeling your turn signal housings. I need to drill holes in mine to re-route the wires and would appreciate a link to that. Thanks again for the help.
Here's the link:

https://www.hdforums.com/forum/7869922-post13.html

Anxious to know why you want to drill an additional hole in the housing?
 
Reply
Old Mar 16, 2011 | 11:57 AM
  #7  
maryland blackout's Avatar
maryland blackout
Thread Starter
|
Tourer
Joined: Jul 2010
Posts: 426
Likes: 2
From: Annapolis, MD
Default why i need new holes in the signals (i think)

I'm planning on attaching the signals under the swing arm by either bolting them to an L bracket hanging from the axle (tightened down against the swing arm by the axle nut) or by getting axle nut covers and drilling a hole in the bottom of those and putting a bolt through there as i have seen done by one of the members "Hickey". He used front turn signals for his rear which have one threaded hole and a seperate hole where the wires are routed. I included a picture below of how his were done. As you can see in the other picture of my turn signals, the wires come out of the threaded hole making it impossible to bolt to anything without a hollow bolt (these signals were part of light relocation bar needed to install hardbags; original picture included below). So my plan is to drill another hole in the signals, re-route the wires and seal the drilled hole with marine sealant to keep them water tight and then bolt the signals using a regular bolt in the threaded hole. If you are anyone has a better solution it's greatly appreciated. I don't have front turn signals to use for this application as hickey did.
 
Attached Thumbnails Help: brake/turn wires. Which are which?-hickey.jpg   Help: brake/turn wires. Which are which?-stipped-signals.jpg   Help: brake/turn wires. Which are which?-tail-done.jpg  
Reply
Old Mar 16, 2011 | 12:56 PM
  #8  
JRK5892's Avatar
JRK5892
Banned
Joined: Mar 2007
Posts: 19,481
Likes: 25
From: Chicago suburbs (Elgin/Schaumburg)
Default

ii love that look!!! run the wires thoughy our swing arm man!!!
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
laracroft
Sportster Models
1
Jul 3, 2017 09:18 AM
Dawntreader
Sportster Models
8
Nov 24, 2014 10:50 AM
RonT1972
Sportster Models
21
Feb 28, 2013 02:26 PM
RKTonyC
Dyna Glide Models
8
May 29, 2009 12:04 AM
oldschoolnc
Dyna Glide Models
4
Sep 23, 2008 04:30 PM




All times are GMT -5. The time now is 01:31 PM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE