One passing light out
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Grand HDF Member
Joined: Jul 2012
Posts: 3,973
Likes: 912
From: Omaha
One passing light out
I did a search and couldn't find anything related so before I spend hours chasing my a$$ I figure I'd see if anyone has any idea/s.
The bike is an 09 Heritage.
For some reason my right passing light is out.
The light itself is good. (I swapped the right and left to be sure).
I've got around 12volts at the plug and that's reading hot and ground off the plug.
What I can't figure out is if I've got 12v at the plug why doesn't' the light come on?
There's got to be a simple answer, I just don't have it yet.
Any ideas?
The bike is an 09 Heritage.
For some reason my right passing light is out.
The light itself is good. (I swapped the right and left to be sure).
I've got around 12volts at the plug and that's reading hot and ground off the plug.
What I can't figure out is if I've got 12v at the plug why doesn't' the light come on?
There's got to be a simple answer, I just don't have it yet.
Any ideas?
Stellar HDF Member
Joined: Jul 2009
Posts: 2,476
Likes: 193
From: Las Vegas, NV
If they work the same as the lamps on my 09 Ultra Classic the ground is correct. Open up the light and you'll see where the ground connects to a rivet inside the housing, the wire broke off. If your situation is like mine, you'll have the tail from the original where the connector still attached to the rivet. I just took an inline butt connector and crimped it onto the end of the original connection and the other end to the wire. I didn't want to have to drill the rivet out. Both my lamps have had this issue.
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Grand HDF Member
Joined: Jul 2012
Posts: 3,973
Likes: 912
From: Omaha
Well the problem is power to the passing light.
It appears I've got a "partial" open somewhere.
Without the light connected I have 12v.
With the light connected the voltage drops to between 4-7v.
From the wiring schematic there's only 2 connections that are dedicated to each individual passing light.
The connection at the light itself (connector #73RB or LB) and the connection at connector #73A/B.
From the wiring schematic, power for both passing lights goes from the high/low beam switch through a single wire to the passing light on/off switch.
From the on/off switch power continues through a single wire to connector 73A/B.
At connector 73A/B power is broken into two wires going to connectors 73RB and 73LB.
So if the problem was before connector 73A/B both passing lights would be impacted.
I've already eliminated the possibility of connector #73RB being the problem's location so the problem's location has to be one of two places.
Either a partial broken wire between connector 73RB and connector 73A/B or a bad connection at connector 73A/B that is only impacting the right passing light.
My bet is a bad connection at connector 73A/B.
However that connector appears to be behind the headlight bucket assemble so getting to it will take a little effort especially with my fairing.
BTW- for those that missed a previous post of mine; 3 weeks ago I ditched my bike in Arkansas and during the ditching the fairing was pushed forward causing the headlight bucket to get pushed down.
With the connector 73A/B behind the headlight bucket what's the chances that my problem is just a delayed result of the ditching?
Looks like I'm taking the fairing off and digging in behind the headlight bucket.
It appears I've got a "partial" open somewhere.
Without the light connected I have 12v.
With the light connected the voltage drops to between 4-7v.
From the wiring schematic there's only 2 connections that are dedicated to each individual passing light.
The connection at the light itself (connector #73RB or LB) and the connection at connector #73A/B.
From the wiring schematic, power for both passing lights goes from the high/low beam switch through a single wire to the passing light on/off switch.
From the on/off switch power continues through a single wire to connector 73A/B.
At connector 73A/B power is broken into two wires going to connectors 73RB and 73LB.
So if the problem was before connector 73A/B both passing lights would be impacted.
I've already eliminated the possibility of connector #73RB being the problem's location so the problem's location has to be one of two places.
Either a partial broken wire between connector 73RB and connector 73A/B or a bad connection at connector 73A/B that is only impacting the right passing light.
My bet is a bad connection at connector 73A/B.
However that connector appears to be behind the headlight bucket assemble so getting to it will take a little effort especially with my fairing.
BTW- for those that missed a previous post of mine; 3 weeks ago I ditched my bike in Arkansas and during the ditching the fairing was pushed forward causing the headlight bucket to get pushed down.
With the connector 73A/B behind the headlight bucket what's the chances that my problem is just a delayed result of the ditching?
Looks like I'm taking the fairing off and digging in behind the headlight bucket.
Last edited by Bluraven; Oct 8, 2017 at 09:01 PM.
Cruiser
Joined: Jun 2017
Posts: 110
Likes: 31
From: Boise
I had this same thing happen this spring. When I opened the light, there was a small piece of wire insulation that had rubbed away and was shorting out against the housing. I put some shrink tubing on the wire and reinstalled the light. No issues since.
My vote is ground
My vote is ground
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Grand HDF Member
Joined: Jul 2012
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From: Omaha
It's not the ground.
I ran a jumper wire from the hot wire on the left light to the hot wire on the right light and the right light illuminates as normal.
The problem is differently related to the hot wire.
I ran a jumper wire from the hot wire on the left light to the hot wire on the right light and the right light illuminates as normal.
The problem is differently related to the hot wire.
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Thread Starter
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Grand HDF Member
Joined: Jul 2012
Posts: 3,973
Likes: 912
From: Omaha
How do you "scrape the contacts" and "squeeze the socket housing" since the light assemble is a sealed unit?