Reverse Light PIn on a 7-Way Trailer Connector

Question

Question:

I have a 2018 Ram2500 I wanted to use a removable auxiliary reverse light for plowing that I would mount on the trailer receiver. Is there a pole on the plug that would turn the light on when truck is in reverse.

asked by: Mark A

0

Expert Reply:

The reverse light pin on a traditional 7-way trailer connector, like part # PK11893 or a factory connector if that's what you have on your 2018 Ram, is the center pin. Take a look at the picture I attached that shows all the pin functions.

To add a light that runs off your truck's reverse light circuit you can tap into the trailer wiring going into the center pin on the connector or directly into the reverse lights on the back of the truck. Either will work for you.

expert reply by: Charles S

0

click to enlarge

Steve S.

10/31/2024

What if I have a 4 wire flat plug with a white brown green and yellow which color wire do I for the reverse light

Bryce D.

11/1/2024

@SteveS Steve, you'd need to use a circuit tester # PTW2993 and test the wires for function in order to determine which one is the reverse light.

Terry

1/10/2026

@BryceD 4wire connector does not have a reverse wire, just left/right/brake/tail-clearance.

Dave

11/29/2024

Doesn’t seem to work with my two wire Aux light (red and black wires on the light) as indicated on your reply.

Kevin C.

11/29/2024

@Dave How is your light wire into the 7-way? I'm going to need to know more about your setup in order to figure out the problem.

Dave

11/29/2024

@KevinC Hi Kevin, thank you for your reply. I am trying to use a standard 7 pin blank adapter to plug for an auxiliary mounted light to the back of my truck. I know I can tap into the trucks back up wiring, but I wanted to have a temporary reverse light for backing into dark camping spots. As I understand your response to a previous guest, the center pin is the reverse light function, and the black wire around the perimeter is for power. I tried reversing my red and black from the center pin to the black along the perimeter and was unable to get the reverse light to work. Do you have some ideas for me, please?

Kevin C.

11/29/2024

@Dave Ok, what's happening is you're putting two different power sources to the light instead of a power and ground. If you wired to the ground and the reverse light pins the light would work whenever you put the vehicle in reverse.

Answer 1

Hey Terry, yes the Dexter Nev-R-Adjust assemblies part #23-468-469 that you referenced are correct for your Dexter 3,500 lb trailer axle. These are really nice since you don't have to ever worry about adjusting your brake assemblies.

view full answer...

Answer 2

We have seen people mount storage boxes on either side of the nose of a V-nose trailer like what you see in the picture I attached. The part #DZ91717P would work well if you have room for it like that. The dimensions of the box are 36" long…

view full answer...

Answer 3

Hey Jered, cool name. The Peterson LumenX LED Clearance and Side Marker Trailer Light item #PET59JV is going to fit a 2-1/4" diameter hole. The light itself is 2" in diameter and the included grommet will hold it in place. What kind of…

view full answer...

Answer 4

I can certainly help you with that. Since the Curt T-Connector Vehicle Wiring Harness, part #C55384 is a 4-way connector the four functions will be Yellow for the left turn and brake, Green is for right turn and brake, Brown is for running lights,…

view full answer...

Answer 5

Hi Mitch; you can add the Optronics LED Backup Light for Truck or Trailer #OPT62KB but you will need to run additional wiring. Under your camera will work, or wherever else you want to install it that works best for your setup. Then you can run…

view full answer...

Answer 6

Hi Rusty; the Dexter #84546UC3-EZ and etrailer #AKHD-5475-35-K will both fit a 3,500 lb axle but they have different bolt patterns. You already ordered the Dexter in the past so I'm assuming your wheels are 5 on 4-1/2. For the same bolt pattern…

view full answer...

Answer 7

You can verify that the 10-19 grease seal included in Bearing Kit #BK2-100 is the correct one for your spindles by taking two measurements. First you want to measure the rear hub bore where the seal is inserted. The seal's outer diameter needs to…

view full answer...

Answer 8

Hey Aaron, for trailer wiring the colors are only a guide and not always carefully followed. In your case if the reverse light pin of your 7-way happens to have a black wire then that's perfectly fine to use for the reverse lights. So what…

view full answer...

Answer 9

You would not be able to charge your battery through the wiring on your 4-way trailer connector. Since your truck has a 7-way connector, you could maintain the power to the battery but not charge it. To begin, you would need to cut off your 4-way…

view full answer...

Answer 10

To connect back up lights you need to have a 7-way trailer connector on both your trailer and tow vehicle. On a 7-way the reverse lights are powered by the center pin. To connect reverse lights to the trailer's 7-way you can use 16 gauge wire…

view full answer...

Answer 11

The towing capacity of a 2018 Chrysler Pacifica is 1,500 lbs if you don't have the factory tow package or 3,600 lbs if you do have the factory tow package. The use of electric trailer brakes is pretty common nowadays and I recommend looking for a…

view full answer...

Answer 12

If you have already added the fuse and the trailer charge circuit is not activated in the 2019 Ford F-350 Super Duty with factory integrated brake controller, then you want to make sure the trailer is connected and you press the brake according to a…

view full answer...

Reverse Light PIn on a 7-Way Trailer Connector

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching