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Dec 30th, 2023
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 Trailer running lights not working?
#12715571
04/13/18 09:38 PM
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Joined: Jun 2016
Posts: 1,514
i-Fish
OP
Extreme Angler
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OP
Extreme Angler
Joined: Jun 2016
Posts: 1,514 |
The trailer brake lights and indicator lights work just fine but my running lights dont. What gives? Any ideas?
If you can't find em wind em.
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Re: Trailer running lights not working?
[Re: i-Fish]
#12715572
04/13/18 09:39 PM
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Joined: Aug 2004
Posts: 2,712
Bass Buster1
Extreme Angler
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Extreme Angler
Joined: Aug 2004
Posts: 2,712 |
Usually ground issues with trailer lights. Each light should be grounded to the trailer and I ground the harness to the trailer. Some ground through the hitch and ball and if it is rusty or greasy it sometimes does not ground out good. You see trailers going down the road lights flickering with every bump, those are grounded through the ball.
See you on the lake and have a great day!
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Re: Trailer running lights not working?
[Re: Bass Buster1]
#12715573
04/13/18 09:42 PM
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Joined: May 2002
Posts: 15,473
K.D.
TFF Guru
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TFF Guru
Joined: May 2002
Posts: 15,473 |
Either a fuse in the tow vehicle or a ground issue. If I cant troubleshoot it in a minimum amount of time I usually just rewire the whole trailer so I know its done right. Wiring harness is cheap and it doesnt take much time.
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Re: Trailer running lights not working?
[Re: i-Fish]
#12715582
04/13/18 09:48 PM
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Joined: Oct 2010
Posts: 352
blueduck
Angler
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Angler
Joined: Oct 2010
Posts: 352 |
Check vehicle fuses, then plug on vehicle, then pigtail if used before residing the trailer. I had problems for almost a year when we going the pigtail was bad.
Dick Hairston
Vietnam VET, Purple Heart
PB: 11-2 (Big O,Florida)
Triton, Merc, Lowrance
"Get the Net"
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Re: Trailer running lights not working?
[Re: i-Fish]
#12715584
04/13/18 09:49 PM
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Joined: Oct 2010
Posts: 352
blueduck
Angler
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Angler
Joined: Oct 2010
Posts: 352 |
Damn spellcheck, but you get the idea.
Dick Hairston
Vietnam VET, Purple Heart
PB: 11-2 (Big O,Florida)
Triton, Merc, Lowrance
"Get the Net"
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Re: Trailer running lights not working?
[Re: i-Fish]
#12715585
04/13/18 09:49 PM
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Joined: May 2009
Posts: 10,314
Texan Til I Die
TFF Guru
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TFF Guru
Joined: May 2009
Posts: 10,314 |
These posts always amaze me. I could tell you what is wrong in 2 minutes or less if I was standing there with a volt meter, but if we start diagnosing it over the interwebs, it takes a minimum of 2 days and 6 pages to find the answer.
"If ever time should come, when vain and aspiring men shall possess the highest seats in Government, our country will stand in need of its experienced patriots to prevent its ruin." - Samuel Adams
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Re: Trailer running lights not working?
[Re: Texan Til I Die]
#12715846
04/14/18 12:31 AM
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Joined: Apr 2014
Posts: 457
dandeeks
Angler
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Angler
Joined: Apr 2014
Posts: 457 |
These posts always amaze me. I could tell you what is wrong in 2 minutes or less if I was standing there with a volt meter, but if we start diagnosing it over the interwebs, it takes a minimum of 2 days and 6 pages to find the answer. I get your point, why don't you just tell him how to troubleshoot with the volt meter as mentioned ?
Last edited by dandeeks; 04/14/18 12:31 AM.
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Re: Trailer running lights not working?
[Re: i-Fish]
#12716001
04/14/18 01:54 AM
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Joined: Aug 2013
Posts: 4,712
Txmedic033
TFF Team Angler
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TFF Team Angler
Joined: Aug 2013
Posts: 4,712 |
Check your vehicle fuses for trailer lights. Take the voltmeter and check your trailer plug to make sure it is getting power to the trailer and then and insert the red into the trailer wire while grounding the black on the trailer. Make sure your trailer lights are supposed to be on while you are doing this. I would start at the trailer tongue since it is both sides. If you have voltage there, try again at the lights and figure out where you are losing power. If you have 12 volts of power all the way to the lights then it is a ground issue. I would bet that it is a ground issue near the tongue since you don't have lights on either side.
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Re: Trailer running lights not working?
[Re: i-Fish]
#12716109
04/14/18 02:52 AM
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Joined: Apr 2005
Posts: 15,647
armadillo joe
TFF Guru
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TFF Guru
Joined: Apr 2005
Posts: 15,647 |
Mine did that and it was a fuse in my truck.
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Re: Trailer running lights not working?
[Re: i-Fish]
#12716119
04/14/18 03:01 AM
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Joined: Sep 2003
Posts: 150
Robert Blair
Outdoorsman
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Outdoorsman
Joined: Sep 2003
Posts: 150 |
Fuse on truck or connector, not a ground problem ( since the brake lights
On the trailer use the same ground as the trailer running lights) the brake lights work, so they must have a ground.
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Re: Trailer running lights not working?
[Re: i-Fish]
#12716527
04/14/18 04:34 PM
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Joined: Dec 2004
Posts: 849
stratosman201
Pro Angler
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Pro Angler
Joined: Dec 2004
Posts: 849 |
Fuse in truck. I have a 2007 Denali and just revolved the exact issue with a fuse. Does your tow vehicle happen to be a gmc? My fuse was labeled trlr park. Funny name but true.
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