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I switched to a short turn signal bar on my 2009 flstc. Now my rear signals do not work

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  • Harley Davidson Master
  • 40,008 Answers

Hi Vince, 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

Posted on May 24, 2015

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

cape cod bob
  • 292 Answers

SOURCE: need wire diagram for the turn signal switch.

your wires are crossed/shorting somewhere, probably in the headlight. remove the light to get to all the wires. you should be able to see which colors go to which side, also look at the wires coming from the turn signals both front and rear lefts will be same color and the rights will be another color. you should be able to tell by looking inside the switch which side is which color and which one is the feed to the switch

Posted on Apr 10, 2009

DJ_MAX1369
  • 119 Answers

SOURCE: HD 89 FLSTC misfires using turn signals..

I definately would think it is something within the charging system. Here is a few tests you can run. First with the bike off take a multimeter in VDC check the battery voltage at the battery. (should be at 12.5 VDC) If not first charge the battery. Second start the bike, with it running and multimeter again in VDC check voltage at the battery while slowly opening the throttle(should see between 13.2 and 14.5 VDC at the battery) If you have more then 15 VDC then you have a bad voltage regulator. If you have less then battery voltage from the first test. You may have a bad stator and/or a bad voltage regulator. Third test with bike turned off and multimeter in continuity. Place one meter lead into either of the two holes for your stator lead(coming out of the front of the primary drive case) the other meter lead to any good ground. If you get a tone or continuity then you have a grounded stator, and it has to be replaced before proceding any further with charging system tests. If you do NOT have continuity then check the wires from the voltage regulator running back to the battery for any breaks or chaffing, if none are found. I would have the battery load tested as well. It also sounds like you could have a short in the turn signal wiring, maybe check the wiring inside the rear fender for chaffing as well. I personally think you'll find its an issue with the charging system itself though. Good luck and please let me know what you find out.

Posted on May 06, 2009

DJ_MAX1369
  • 119 Answers

SOURCE: relocating front turn signals on 2009 Fat Boy

front turn signal wires should be routed down the right side of the backbone of the frame under the gas tank. they will be violet and brown wires along with 2 blacks for grounds.

Posted on Nov 02, 2009

wd4ity
  • 4565 Answers

SOURCE: 1993 Harley Davidson motorcycle (FLSTC). If I

DeJevu! I thought I answered this already. Anyway, I'll do it again. The first thing I'd try is putting new bulbs in the turn signal lights. Use the proper bulb called for in the books. This is a pretty inexpensive test.

Next, you didn't say whether or not it was both sides or just one side that was not blinking. The turn signals are controlled by the turn signal cancelling unit. I'd try to find someone that had a known good unit that would allow me to try the unit to see if that fixed the problem. I say this because the units are expensive. The last one I replaced costs about $150.

Oh yeah, on the Softail, I think the "tilt switch" located in the speedometer is involved in cancelling the turn signals as well. If the switch is stuck in the closed position, it may be cancelling the turn signal as soon as you set it. The switch is not in the circuit for the four way flashers. You'd have to look at a schematic to tell for certain. Sorry, I don't have one for a Softail.

Posted on Nov 13, 2009

  • 45 Answers

SOURCE: My 2004 gsxr 600 turn signals don't work. I have

have you changed the flasher relay to run led indicators if not you will need to you cant run standard bulb indicators and led together. and with the brake like sounds like pulling on the cable when on lock causing switch to stay on check that location of the wiring is correct and sufficient freeplay

Posted on Dec 16, 2009

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2 Answers

My rear turn signals are not working. front turn signals work rear parking lights work brake lights work


In the diagram for rear lamp, the top wires are voltage, the bottom black wire is ground. The brown wire on either side should be tail lamps, goes hot when you turn on the headlamp switch. The other top wire on either should be for turn signal. With everything turned on, is there voltage on that wire?
Because the front works and the rear don't, possible wiring circuit problem? The voltage for turn signals comes from bcm. The bcm knows when you turn on turn signal switch, either side, then the bcm sends voltage to turn signal lamp at the rear and front.

rear-turn-signals-not-working-front-nrw1b5lbo1usuvcsnuvurzx3-3-0.jpg

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1 Answer

Hi,rear left indicator staying on front left not working, checked bulb, bulb holder, fuses ok.right indicator ok thx


Hi, Jeff before diagnosing any turn signal issue make sure the bulb is good and the light fuse has continuity with a test light. 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, please visit the websites below. Good luck and have a nice day. Mv agusta f4 and manual
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1 Answer

Left bleaker and break light not working. Turn signal works bleaks faster than right side.


Has the vehicle been in an accident on the left rear side. First check the bulb to be sure it is not defective, trade it out with the side that works properly to test. If the bulb works well then My thought are you may have a shorted wire. The turn signal flasher works by heat build up within the flasher the heat is caused by the load of the bulbs, the load heats the metal spring causing it to open the circuit then as quickly as it cools down the circuit closes again lighting the bulbs.
There is also a possibility of a defect in the turn signal mechanism on the steering column. The turn signal switch on many models does three different things on many models that use the same bulb element / or bulb for brake and turn on rear of vehicle. It controls the circuit for brake light by sending power both left and right side rear when turn signal is in neutral position then when turn signal is in left turn the switch cancels brake light power to left side rear and supplies flasher power to left side while maintaining brake light supply to the right side rear, and so on opposite when the right turn is chosen on turn signal switch. The turn signal indicators on the dash normally run off the same circuit as front turn signal bulb only which is also controlled by turn signal switch. Front has turn signals but no brake light.
I think there is an additional load on the left side rear turn circuit and it could be either a wire that is shorted or the turn signal switch if the same bulb element is used for both functions.
Often times if trailer lighting is connected the flasher will also blink a little faster because of the extra load of additional bulbs.

Feb 15, 2015 | Cars & Trucks

1 Answer

Where is the brake light switch on a 2009 harley flstc


There are two.

The front switch is inside the right handlebar switch housing (START, RUN/OFF kill switch, RIGHT TURN SIGNAL) and operates off the front brake lever.
The usual problem with this is it either sticks, or the "tit" that works off the brake lever gets broken off, usually because the front master cylinder wasn\'t installed by the correct procedure.
Usual results is the brake light will not turn off with the ignition on.

The other switch is located along the rear brake hydraulic line.
Start at the master cylinder and follow the line back to the rear caliper, and you\'ll find it eventually.

It appears Harley has a problem with the rear brake light switch on this year, as it tends to spring a leak, brake pedal goes all the way down without stopping, sometimes smoking from the brake fluid being sprayed on hot engine parts, etc.

Oct 05, 2013 | 2009 Harley Davidson FLSTC Heritage...

1 Answer

Front & Rear turn signal


Not familiar with the Softail Rocker, but the 2009 Baggers have a "Turn Signal Security Module" (TSSM) as one unit.
This is what it looks like:
http://img.photobucket.com/albums/v312/Bulldogxj/Picture001-1.jpg

Mine is under the seat.

Jun 19, 2013 | 2009 Harley Davidson FXCW Softail Rocker

1 Answer

Phase 7 install


Hi George, always check fuses and bulbs first, you could have a faulty turn signal module or a bad turn signal button/switch, remove it from the switch housing and check for continuity, check your wiring and connections from the turn signal switch to the turn signal module with a testlite. Make sure all wires are not worn or pinched and connector pins are not corroded, broken, or loose. For a free wiring diagram please visit the website below. Good luck and have nice day. Harley Davidson Wiring Diagrams and Schematics
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1 Answer

Engine shuts off with the use of turn signal


Is this the turn signal switch on the same grip as the engine kill switch? If so, carefully dismantle the switch block and look for a loose or broken wire causing a short.

Jul 31, 2011 | 2002 Harley Davidson FLSTC - FLSTCI...

1 Answer

How to change the rear signal light bracket on a 2005 flstc Heritage Softail


Hi Anonymous, for more information about your question please visit the websites below. Good luck and have nice day.
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Jun 19, 2010 | 2005 Harley Davidson FLSTC - FLSTCI...

1 Answer

1995 FLSTC Right Rear running light doesn't light up. Turn signal works fine, no power through running light circuit after mystery box on rear fender (below seat, in fron of fender). L side has power out...


The only "mystery box" that I can think of is the turn signal cancelling unit. It controls most of the lighting on your bike. The box is about an inch and a half wide by about three inches long, little over half an inch thick.
Disconnect the plug on the end of the box and check the pins to make sure they're clean. Also check for any sign of a short between the box and the light. I've seen people buy the box, and they ain't cheap, only to find out that they had a short somewhere in the wire. If you do have a short, the only thing you'll see is that the light won't work. It will not blow a fuse or anything like that. As far as I know, there is not way to test the output unless you've got a special plug made up to do so with. If you know someone that has one, swap the box out with a known good one. Last time I bought one of these boxes, it cost $150 and that was several years ago. Good Luck.

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