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Headlight install question

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Old Aug 21, 2012 | 08:06 AM
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Billy Blaze's Avatar
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Default Headlight install question

So I have two wires on my new headlight best I can figure one is for high beam and one is for low beam.

However...
On my current Nightster headlight there are what appears to be at least 3 wires coming out of the wire wrap cable leading into the headlight housing.
I am looking at the diagram in the owners manual, where I have not found much info on the wires themselves but rather the components the wires are hooked up to.

If there is anyone out there that has done an aftermarket headlight install, it would be of a great help to me to share your thoughts.

I am off to do a search
 
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Old Aug 21, 2012 | 08:30 AM
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There should be three on your new one too. High beam, low beam, and ground wire.
 

Last edited by nc883; Aug 21, 2012 at 11:07 AM.
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Old Aug 21, 2012 | 10:22 AM
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Nope there are only 2
I may end up having to add another ground wire OR it could be grounded inside the housing somwhere I suppose.
 
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Old Aug 21, 2012 | 10:56 AM
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Most likely, it's probably grounded to part of the headlight frame inside, and it will finish the ground connection when you bolt the headlight onto the trees.
 
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Old Aug 21, 2012 | 11:31 AM
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Originally Posted by WVHogRider
Most likely, it's probably grounded to part of the headlight frame inside, and it will finish the ground connection when you bolt the headlight onto the trees.
+1 - The housing and mounting bolt are likely the ground circuit.
 
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Old Aug 21, 2012 | 01:35 PM
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ok, that makes sense...

Looking at the photo in the repair electrical manual of inside the OEM light there are a total of 5 wires.
3 come out of the wire wrap that leads inside the healight housing.
Two go into the connection block that connects to the light bulb (which I am sure are the hi and low beam wires)
One goes into a slip on clip on another portion of the light ( I dont know what this is)

Now there are another two wires that come from the top headlight Bolt which I assume are grond wires.
1 goes into the headlight connection block and the other goes on the other end of the slip on clip.

I wish I could find out which of the three wires coming into the headlight housing is Hi, Low, and whatever the third one is...because it looks as if the headlight is also grounded internally on the OEM light.

The phot I am reffering to is on page 486 in the Harley electrical repair manual.
 
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Old Aug 21, 2012 | 02:33 PM
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Ok....whew!! I think I have it

Guys who have done this please help me confirm this is accurate.

Headlight....
WHITE WIRE = HIGH BEAM
YELLOW WIRE = LOW BEAM
BLACK WIRE = GROUND

Turn Signals....
RIGHT
BLACK WIRE = MINUS
BROWN WIRE = PLUS
LEFT
VIOLET WIRE = PLUS
BLACK WIRE = MINUS

I am sure of the headlight wirring but unsure of the Turn signal wirring, since my headlight has the ability to delete the factory turn signals and use a circular pattern of LEDS around the main Light that splits in half for right and left signals I also am tasked in figuring which wires are plus and minus.
I think I have it right after looking at several schematics but it isnt really clear as all the connections are dont with plug and play connectors.

I will report back once this is complete with the correct info on the wirring and some pics of the new headlight installed and working.

(For those curious I bought the RTB Alien Black Hallogen Headlight sold by Primo Rivera.)
 
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Old Aug 21, 2012 | 09:17 PM
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Can anyone verify I have the right info on the turn signal lights?
Right color wire for +/-??

I really would appreciate the help, and this thread will help others too.
Itr took me a while to get the right info on the headlight wiring.
 
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Old Aug 22, 2012 | 01:11 PM
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Alright confirmed with my local shop that the schematic is right Black wires on the turn signals are the minus and the colored wires are the plus.

I really thought I would get more replies...
Guess I should have made it a two part question and asked "What ridding shoes people wear" or "What is a swingarm"....lmao

Oh well...
Maybe this will help the next guy that is asking questions about hooking up the electrical portion on an aftermarket headlight.

Much thanks to the three guys who did help!! : )
 
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Old Aug 26, 2012 | 07:04 AM
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alright so I wirred everything up and the turn signals worked however the light did not.
I am going to see if its the bulb today and try it again.

Update on the wirring though

There are three wires in the turn signal wraps not two..
The shop manual schematic shows different wirring colors than what is actually on the bike.
I found on both sides of the turn signal wire wraps..
Blue....manual says this goes to running lights (optional)
Violet...+
Black....-

The headlight has....
Black....(manual says ground)
Yellow....Low Beam...per manual
White....High Bean....per manual
 
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