Question about 2003 Harley Davidson FLHTCUI Electra Glide Ultra Classic

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No Lights on Rear. All work when either the turn signal is turned on or break is pulled 2003 Harley Ultra

When Bike is running, No rear lights on tail light or the module the light unit on the Tour Pack or the add on wing light. When I put either signal on all flash. They all come on when the breaks are applied.

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Hi, Anthony I own the exact same bike in the gun metal blue Anniversary Edition, before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced you OEM lights with LED lights you are going to need a load equalizer. If no turn signals work the cause could be a faulty turn signal module or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion. If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function. If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction. If your rear turn signals don't work check your rear fender wiring harness connector first for corroded, broken, loose pins/sockets, power, and a good ground, (the harness connector is usually located under the seat on the front of the rear fender) then keep tracing the wiring look for obvious harness damage caused by the rear tire. If you still can't find the malfunction backtrack from the rear fender wiring harness connector. If one side does not work you could have a faulty turn signal switch or module check for continuity.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below and for more specific information or questions at no charge please feel free to contact me at xlch@mail.com Good luck and have a wonderful day.
Headlights and Running lights not working
Harley Davidson Touring Workshop Service Repair Manual 2003 $10 very cheap also comes with an electrical diagnostic manual
http://partsfinder.onlinemicrofiche.com/ronnies/showmodel.asp?make=hdmc
http://www.harley-davidson.com/content/h-d/en_US/home/owners/maintain-your-bike/owners-manual.html
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Posted on Apr 22, 2017

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Posted on Jan 02, 2017

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1993 hd sporster 883 front turn signals work properly but the rear ones dont work at all


Hi, Dennis before testing any electrical component in the Light Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, especially "AGM" batteries, also before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced your OEM lights with one or all LED lights you are going to need a load equalizer.
If no turn signals work the cause could be a faulty turn signal module or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion.
If all four turn signals flash at the same time like hazard lights even though you only pressed one turn signal button then you have a LED light in the circuit and need a load equalizer that can be purchased from any motorcycle parts supplier.
If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function.
If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction.
If your rear turn signals don't work check your rear fender wiring harness connector first for corroded, broken, loose pins/sockets, power, and a good ground, the harness connector is usually located under the seat on the front of the rear fender then keep tracing the wiring look for obvious harness damage caused by the rear tire.
If you still can't find the malfunction backtrack from the rear fender wiring harness connector.
If one side does not work you could have a faulty turn signal switch or module check for continuity.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below and for more specific information or questions at no charge please feel free to contact me at xlch@mail.com. Good luck and have a wonderful day.
Harley Davidson Signal Lights
https://www.carlsalter.com/pdfs/Harley%20Davidson%20%20Sportster%201986-2003%20Service%20Manual.pdf
http://partsfinder.onlinemicrofiche.com/ronnies/showmodel.asp?make=hdmc
http://www.harley-davidson.com/content/h-d/en_US/home/owners/maintain-your-bike/owners-manual.html
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Jul 15, 2017 | Harley Davidson XL 883 Sportster...

1 Answer

Rear turn signals


Often LEDs have difference electrical tolerances and are not compatible with other systems without special adapters to balance conductivity etc.

Jun 22, 2014 | 2003 Harley Davidson FXST Softail Standard

1 Answer

Last year I put LED lights/signals on my 2010 Ultra. Last week the left rear turn/running light stopped working completely. Any ideas what may be wrong? I looked at the connections into the rear brake...


Check for power at the light connector, if there is none go back up the line and check at the next connector etc if there is power at a connector then there is an open between that connector and the last one that had no power. If there is power to the light assembly itself then the assembly must be defective but you could bring known power and ground directly to it on the bike or on the bench, obviously if it works then the light assembly is good and if it does not work then the light assembly is defective.

May 10, 2014 | 2005 Harley Davidson FLHTCUI Electra Glide...

1 Answer

Rear turn signal lights are not working, Tail light and rear fender light work but not the turn lights


Do both sides not work??? What are you calling the tail light and the rear fender light??? Is the brake light working??? What if anything was done on the bike prior to this.

May 09, 2014 | 2006 Harley Davidson FLHR Road king

1 Answer

Turn signals and brake lights an horn stopped working on 2004 2004 harley roadking


Hi, Rick before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced you OEM lights with LED lights you are going to need a load equalizer. If no turn signals work the cause could be a faulty turn signal module or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion. If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function. If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction. If your rear turn signals don't work check your rear fender wiring harness connector first for corroded, broken, loose pins/sockets, power, and a good ground, (the harness connector is usually located under the seat on the front of the rear fender) then keep tracing the wiring look for obvious harness damage caused by the rear tire. If you still can't find the malfunction backtrack from the rear fender wiring harness connector. If one side does not work you could have a faulty turn signal switch or module check for continuity. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below and for more specific information or questions at no charge please feel free to contact me at xlch@mail.com Good luck and have a nice day.
No Tach Speedometer Horn Turn Signals or Brake Lights Harley Davidson...
Tach Turn Signals Horn not working
http://www.carlsalter.com/pdfs/Harley_Davidson_FLHRC%202006%20Maintenance%20&%20Repair%20Manual-Full.pdf
http://partsfinder.onlinemicrofiche.com/ronnies/showmodel.asp?make=hdmc
http://www.harley-davidson.com/content/h-d/en_US/home/owners/maintain-your-bike/owners-manual.html
Instant Tech Relief A must have !!! Absolutely "FREE"

Apr 05, 2013 | 2004 Harley Davidson FLHR - FLHRI Road...

1 Answer

HAVE 2001 Sportster 883 SPORTSTER XLH, added a LED light to the sissy bar, rear turn signal a breaks really bright. Back lights quit working removed the LED. Still no rear brake light or turn signals,


Hi V-twin, call, take a ride or trailer your bike over to your local dealers service/parts department, I'm sure they will be happy to take your Harley Davidson for a test ride if necessary/possible and offer professional advice and assistance concerning your issue. Good luck have a nice day.

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1 Answer

No brake lights or turn signals on te rear of a 2007 Harley ultra Classic


Hi Mike, always check the bulbs first for broken filaments. Then check the connection at the rear fender wiring harness, inspect for corroded, broken or loose pins. Use a dab of dielectric grease and repair as necessary. Check your brake relay if you have one , some models rear turn signals were single filament bulbs only, no running light. If all else fails get out your test light and start tracking the power wire from the harness connection. For a free wiring diagram please visit the website below and good luck:
Harley Davidson Wiring Diagrams and Schematics

Sep 24, 2011 | 2007 Harley Davidson FLHTCU Ultra Classic...

2 Answers

My tail lights/brake lights wont come on and the signal lights either. But the turn signal will light up when activated. Whats wrong? Its not the fuse. Should i just bring it to the dealership?


Taking your bike to a dealership might be the best choice. If you can't troubleshoot it, I certainly have a time trying to locate a problem without the benefit of being at the bike myself.

Steve

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1 Answer

The blinkers work but the brake lights dont for a 2003 harley davidson dyna super glide...how can i fix this?


Check to see if the brake light works when you apply the front brakes. If they work but if the brake light won't come on when the rear brake pedal is depressed, the rear brake light switch is bad. Find the rear brake master cylinder and you'll see a metal line coming out of it. Follow the line back towards the rear of the bike until you come to a tee in the line. The brake light switch is screwed into the tee and a couple of wires plugged onto it.

If neither your rear brake light nor you tail light works, first check the bulb. If the bulb is good, you might have a wiring problem. The wiring is a sub-harness that plugs up under the seat area and then runs back to the rear light assembly. The turn signal wiring usually run down each side of the rear fender behind the fender struts.

Ride Safe
Steve

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