Troubleshooting No Left Turn/Brake Signal On Trailer

Question

Question:

I installed the relays under kick panel on left side like instructions said. I checke the pin in the nine oclock position with turn signal on and no power is present. I check the three oclock position with turn signal on and there is power there. I swapped the blue relays under kick panel and this didnt change the outcome of the three and nine oclock pins. Any advice would be greatly appreciated.

asked by: Brent

0

Expert Reply:

The 9:00 position of your 7-way should have the left turn/brake signal and the 3:00 position should have the right turn/brake signal when a 7-way is wired up in the traditional layout. I attached a picture that shows how a 7-way typically get wired.

It sounds like your 7-way is functioning correctly if the 9:00 pin has voltage with the left blinker on. Is it possible the problem is on your trailer wiring? A bad ground could easily cause the problem you described. Check the grounds of the trailer lights as that is a very common problem. Make sure they are attached to a clean metal surface.

I attached a couple help articles for you to check out as well.

expert reply by: Jameson C

0

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Answer 1

Wiring harness #118263 is only part of what you would need for your 2015 Nissan Pathfinder. There is also a jumper harness and relays that will be needed to make the harness fully functional and is not included with #118263 since it is for models…

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Answer 2

If the window sticker of the 2011 Nissan Frontier that you are looking at says that it has the factory trailer wiring you should already have the Replacement OEM Tow Package Wiring Harness, part #118263, that you referenced. This product is for…

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Answer 3

Sounds like there are some blown trailer wiring fuses/relays under the hood of your 2015 Nissan Xterra that are in need of replacing. Check all of the fuse boxes under the hood of your vehicle for the trailer wiring circuits and replace as needed.…

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Answer 4

It does sound like you have a blown fuse or bad relay in your vehicle. You can find the fuse panel legend in your owner's manual or ask your dealership where the trailer towing fuse is located. There may be separate fuses used for trailer…

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Answer 5

Since you have cleaned the connection where the harness plugs in under the vehicle and that made some of the functions start working then that leads me to believe that there is additional dirt and corrosion in that area causing it not to work…

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Answer 6

If the running light relay is present in the in-cab fuse panel on your 2012 Nissan Frontier and you are still not getting power on the brown wire of wiring harness #118263 then it could be the fuse associated with that relay. The fuse locations and…

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Answer 7

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 8

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 9

I agree it is the right time to upgrade to a Lithium charger/converter as not all are Lithium compatible. I recommend using the Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger - 60 Amp #PD4060K which is a replacement for your…

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Answer 10

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

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Answer 11

From what I could find it looks like your 122R (red) and 122Y (amber) lights measure 3.75" x 1.70" x .81". We don't have any replacement lense directly for the GLO-BRITE lights but we do have some similar lights that you could use…

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Answer 12

If the trailer wheels scrubbed (dragged and scrapped the ground instead of rolling) when jack knifed then it could have thrown something out of alignment or damaged something. First, inspect the suspension. Look for any elongated holes where…

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Troubleshooting No Left Turn/Brake Signal On Trailer

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