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Old 02-26-2013, 04:19 PM   #1
Art E's Avatar
Join Date: Aug 2004
Location: Millbrook, AL
Posts: 39
Right Turn Signal Won't Work with Headlights

I can't find the problem so far, but without my headlights on (Class A Winnebago Sightseer, 2004) my turn signals work fine. But, when I turn on the headlights, the right turn signal will not work; i.e. does not blink. I guess there is the infamous "short" somewhere, but not sure how to find it. I've visually inspected it but didnt' see anything. Has anyone else hadthis problem and found a fix?

Art E

2004 Winnebago Sightseer 35'
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Old 02-26-2013, 07:11 PM   #2
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Sounds like a grounding problem. Do the blinkers blink at different rates on left versus right? The turn signal may be grounding through the headlight when headlight is off. I would meter the grounds for both turn signals for a comparison.

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Old 02-26-2013, 09:52 PM   #3
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Have you pulled the fuse for the headlights to see if the same thing happens ...

Have you unplugged the umbilical cord for your tow car to see if the same thing happens?
2004 Winnebago Journey 39W - 2012 Buick Enclave
Present @home Home: Oshkosh, WI
We call our rig "Ernie the Journey"

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Old 02-27-2013, 12:54 AM   #4
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Does the rt turn indicator on the dash light when you apply the brakes? if so change the rt rear brake bulb as it may have an internal short.
Dave and Laura & two cats
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Old 02-27-2013, 05:44 AM   #5
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A lot of coaches get the ground for the turn signals from the wiring harness that goes to the head lights. If they grabbed the wrong wire, the 12v when switched on wire, you would lose your ground when the headlights are on and blinkers will not work. With the lights off, the ground is picked up through the filament of the headlight. To check, unplug the headlight and see if you blinker works. If not then the ground from the blinker needs to be moved to the actual ground wire. I actual found this on a Winnie once. Good luck.
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Old 02-27-2013, 06:30 AM   #6
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2 thoughts. The first, if you have the bulb inserted backwards (180 degrees off), the dimmer of the 2 filaments is flashing, and the bright one is turned on with the running lights. With the brighter element lit, seeing the dim one flashing is nearly impossible with the lens in place.

2nd thought is the ground issue mentioned above. I wouldn't mess with it too long. If everything looks good when you pull the lens cover off, and you've tried replacing the bulb, just run a new ground wire from something solid on the frame to your light.

Good luck! -Al
1997 37' HR Endeavor, 275hp Cat, Freightliner
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Old 02-27-2013, 07:45 AM   #7
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Join Date: Aug 2004
Location: Millbrook, AL
Posts: 39
Thanks to everyone who has replied. I did try a couple of them earlier; but, you've given me some more options. I'll try them one at a time; but, I'm thinking that running a separate grounding wire, as ahicks suggested may be the ultimate fix. Since I'm relaxing in my RV in Florida right now, I'll take my time following each suggestion. Now it will be fun instead of mere frustration. THANKS AGAIN.

Art E

2004 Winnebago Sightseer 35'
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