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Trailer Left Turn Signal/left brake light not working - being discussed at Nissan Titan Forums in the Titan Towing & Hauling section.

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Old 03-14-2008, 06:35 AM   #31
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Re: Trailer Left Turn Signal/left brake light not working

Never Mind! I finally found it after I started taking off the electrical tape! Mine was completely covered so I couldn't find it! Way to go dealership!
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Old 03-15-2008, 08:41 AM   #32
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Re: Trailer Left Turn Signal/left brake light not working

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Originally Posted by EZDUZIT
Hey guys I still need someone to tell me exactly where the fuses under the dash are located. I looked for about thirty minutes and still cant see them. I checked with myy dealer and they said all of the recalls and updates where done. Can someone please help me out. I am pulling a 24' car hauler with my brothers Z to a Z car shootout this weekend. Thanks Josh

try running the ground wire<all the way to the trailer lights, behind the bolts and nut thats holding the lights on the trailer. thats the best ground for a titan towing a trailer.
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Old 03-16-2008, 02:03 PM   #33
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Re: Trailer Left Turn Signal/left brake light not working

ok ive tried running the ground wire all the way to the lt rear trailer, and no results. ive also check all my fuses and relays and i have all of them working properly. i still have no lt and lt break light. im leaving tomorrow on a camping trip. what i can do temporarily to get left lt and brake lts.
please help.
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Old 03-16-2008, 07:29 PM   #34
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Re: Trailer Left Turn Signal/left brake light not working

you might be missing a relay, who installed your hitch and put in the relays? and also, take a light of your trail and put the yellow wire to the positive side of your battery and make a wire connection from the bolt that makes secures the light to the trailer and put it on the negative post of the battery. if that light comes on, you either missing a relay or not grounding out properly. if you got lights on one side of the trailer but none on the other side, you missing a relay or that side relay is bad, or you have a ground. wish I was there to help you in person.
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Old 03-16-2008, 08:14 PM   #35
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Re: Trailer Left Turn Signal/left brake light not working

i only have 1 blue relay, the rest are all brown. tow#1 has a blue relay and tow #2 has a brown relay. my bro's armada has the same thing.
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Old 03-16-2008, 09:17 PM   #36
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Re: Trailer Left Turn Signal/left brake light not working

You need to check the tow harness coming out of the BCM whick provides both turn signal and brake lights for the trailer.

It seems during a recall for a BCM harness issue, there was a small sub harness replaced for the tow package, and it just might now include a fuse for each turn signal(remember it's also the brake) side.

The trucks turn/brake functions are controlled and wired different then the trailer harness.
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Old 03-16-2008, 09:18 PM   #37
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Re: Trailer Left Turn Signal/left brake light not working

oh MYTITAN, you have an '05, you only have 1 blue relay. its your trailer dawg. test your pins, but I think its your trailer. cause one relay controls both lights. you might need to rewire the left side due too a short. or ground it better. the frame might be rusted. what kind of trailer is it?

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Old 03-16-2008, 09:27 PM   #38
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Re: Trailer Left Turn Signal/left brake light not working

http://www.titantalk.com/forums/874389-post8.html

thats an 06 and better
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Old 03-16-2008, 09:34 PM   #39
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Re: Trailer Left Turn Signal/left brake light not working

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thats an 06 and better

It's moot...Brake/Turn is controlled by the BCM, there are no relays involved for those 2 actions...
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Old 03-17-2008, 05:58 PM   #40
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Re: Trailer Left Turn Signal/left brake light not working

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Originally Posted by loufish
It's moot...Brake/Turn is controlled by the BCM, there are no relays involved for those 2 actions...


yeah but the relays brings fire to those lights, no relay no lights.
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Old 03-17-2008, 06:56 PM   #41
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Re: Trailer Left Turn Signal/left brake light not working

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yeah but the relays brings fire to those lights, no relay no lights.

Negitive....The BCM is responsible for the trailer connectors L/R turn AND Brake signals.

Relays are for the running lights and 12V to the connector.
See enclosed wiring diagram...Circuts #51 & #52 come straight out of the BCM and go straight to the Trailer Connector...
Attached Files
File Type: pdf Titan Exterior Lights 1.pdf (259.1 KB, 9 views)

Last edited by loufish : 03-18-2008 at 04:17 AM.
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Old 03-17-2008, 07:16 PM   #42
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Re: Trailer Left Turn Signal/left brake light not working

Quote:
Originally Posted by loufish
Negitive....The BCM is responsible for the trailer connectors L/R turn AND Brake signals.

Relays are for the running lights and 12V to the connector.
See enclosed wiring diagram...Circuts #51 & #52 come straight out of the BCM and go straight to the Trailer Connector...

After the campaign, they would have fuses in line, correct? So first check at fr the fuses and then check at the Trucks Trailer connector. then let us know what you find...
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Old 03-17-2008, 08:21 PM   #43
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Re: Trailer Left Turn Signal/left brake light not working

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After the campaign, they would have fuses in line, correct? So first check at fr the fuses and then check at the Trucks Trailer connector. then let us know what you find...

I believe you are correct, but still no relays...I should see if I can add a couple of fuse symbols to the Wiring PDF

Done...Fuse info added to diagram

Last edited by loufish : 03-17-2008 at 08:31 PM.
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Old 03-18-2008, 03:50 AM   #44
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Re: Trailer Left Turn Signal/left brake light not working

Quote:
Originally Posted by loufish
I believe you are correct, but still no relays...I should see if I can add a couple of fuse symbols to the Wiring PDF

Done...Fuse info added to diagram

Right idea, wrong wires...
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Old 03-18-2008, 04:11 AM   #45
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Re: Trailer Left Turn Signal/left brake light not working

Quote:
Right idea, wrong wires...

you're making me laugh...Thanks!
I'll "fix" it one more time...

Once again Done!

Last edited by loufish : 03-18-2008 at 04:18 AM.
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