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Plug-N-Tow (R) Wiring Harness with 4 Pole Trailer Connector

Plug-N-Tow (R) Wiring Harness with 4 Pole Trailer Connector

Item # 33525
Our Price: $33.02
You Save: 28%
Custom Fit Vehicle Wiring

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33525 - 4 Flat Hopkins Custom Fit Vehicle Wiring
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Plug-N-Tow (R) Wiring Connectors provide a no-hassle, quick and easy way to wire your vehicle. 1-800-940-8924 to order Hopkins custom fit vehicle wiring part number 33525 or order online at Free expert support on all Hopkins products. Great prices and Fastest Shipping for Plug-N-Tow (R) Wiring Harness with 4 Pole Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (12)
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Hopkins Custom Fit Vehicle Wiring - 33525

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Converter
  • Hopkins

Plug-N-Tow (R) Wiring Connectors provide a no-hassle, quick and easy way to wire your vehicle.


  • Each vehicle-specific connector is pre-wired and uses original OEM connectors for watertight protection, a guaranteed fit, and a great look
  • No cutting or taping
  • 16-Gauge wire
  • 4-Pole connector includes dust cap
  • Easy-to-follow instructions with pictures are included
  • Converter load is a maximum of 2.1 amps per stop/turn signal (one turn signal on each side)
  • 48" Long 4-pole loop is included
  • Can be used with 5-pole, 6-pole or 7-pole adapters

Installation: Connection point is located behind the rear bumper on the driver side frame rail. The 4-pole trailer connector will be stowed under the vehicle close to the trailer hitch. A mounting bracket is recommended.

Note: Vehicles using this wiring may need to see a local Nissan dealer for a relay. The relay is needed to activate the tow package wiring circuit.

Tech Tip: It is always a good idea to apply a small amount of grease to all electrical connections to help prevent corrosion.

Product detail

11143525 Plug-N-Tow (R) Wiring Harness with 4 Pole Trailer Connector

Replaces 43525 and 33525

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Plug-N-Tow (R) Wiring Harness with 4 Pole Trailer Connector - 33525

Average Customer Rating:  4.2 out of 5 stars   (12 Customer Reviews)

Plug-N-Tow (R) Wiring Connectors provide a no-hassle, quick and easy way to wire your vehicle.

2007 Nissan Frontier

Worked perfect for a 07 Nissan Frontier.

2008 Nissan Frontier

The website said this would fit my 2008 Nissan Sentra, but when it arrived it was for a Nissan Frontier. I thought perhaps the Sentra and Frontier would have the same connectors for the tail lights allowing it to still work, but they do not. I was able to cut off the vehicle tail light connectors and splice the wires from this trailer harness to the wires for my tail lights, which did work, but it was more work and time involved than anticipated.

Hi Randy, I am sorry this harness did not fit your vehicle. Unfortunately, this harness is not confirmed to fit with your vehicle but Hopkins Harness HM11143675 will fit your 2008 Nissan Sentra. I apologize again for this issue.
-- Etrailer Expert Sarah H - 07/07/2017

2006 Nissan Frontier

Part does not fit a 2006 Nissan Frontier wiring harness.

This harness is designed as a replacement for an already existing 4 pole wiring harness. If the vehicle doesnt have the factory equipped 4 pole connector, youd need to use .
-- Etrailer Expert Mike L - 05/06/2019


Your company is fantastic! Great customer service and it was the exact product we needed! Thank you


I looked all over where I live for the proper harness for my truck even the dealership didn't have one without cutting the original harness..I found one on their website and called them and got great service. Thanks

2006 Nissan Frontier

I have a 06 frontier without a tow package. this harness was supposed to deal with that issue. It did not. There was a problem with the turn signals. I ended up having to take it to the dealer to buy the relay needed for towing. So just beware.

2007 Nissan Frontier

I've ordered converters twice from this company. They have very speedy delivery, high quality products, & exceptional customer service. I've learned from experience that if their part doesn't solve my problem, then I've got something else going wrong! They are exceptionally patient & kind!


Part arrived much sooner than expected, Thanks


Fit the vehicle perfect and easy to ins tall.


This product is very good quality. I am very happy with the money spent.

2014 Honda Pilot

Haven't had a chance to connect it yet but appears to be exactly what I need at a fraction of the cost


Wire doing fine


See what our Experts say about this Hopkins Custom Fit Vehicle Wiring

  • Installation of Wiring harness on a 2005 Nissan Frontier
    The Plug-N-Tow (TM) Wiring Harness, item # 33525, will plug in between the male and female end of one of the sets of connectors that you are seeing. Once you separate the connectors it will be obvious whether you have the correct one or not. You are looking in the right area, behind the drivers side bumper on the frame rail. If your vehicle has the factory tow package then you would need the T-One Vehicle Wiring Harness, item # 118263, to make the connection at the rear of your vehicle....
    view full answer...
  • Recommended 4-Pole Trailer Wiring Harness for 2005 Honda Pilot
    We offer three brand options in a 4-pole flat type trailer wiring harness for your 2005 Honda Pilot that will connect to your cargo carrier lighting kit. All are shown on the linked page and all are more or less identical, but we do tend to find that Tekonsha products are the most reliable in the long-term so I suggest part # 118336. Part # 33525 is a similar item for a Nissan Frontier but this does not fit your Pilot.
    view full answer...
  • Recommended Wiring Harness For A 2005 Nissan Frontier
    When it comes to installing a wiring harness on your 2005 Nissan Frontier I recommend The T-One Vehicle Wiring Harness with 7-Way Trailer Connector # 118266. This wiring adapter connects quickly and easily with no cutting or splicing of wires. The wiring is constructed of 16 gauge bonded wire. The installation plugs are below: Locate 12-pin wiring harness behind passenger's-side kick panel and insert harness with relays Locate factory harness connection point behind driver's-side rear...
    view full answer...
  • How to Install a 4-way Connector on a 2006 Nissan Frontier with the Oem Connector Cut Off
    Without the connector there it would be very hard to determine what each wire does, we do not have a wiring schematic available so your best option would be to use a circuit tester like our part # PTW2993 and test the wires individually for function while someone applies the tail light functions of your tow vehicle. Check out the video I attached to get an idea of how this would be done. You would then need to run those wires by function to the 4-way. I attached an FAQ article on trailer...
    view full answer...
  • Towing Wiring Harness on 2006 Nissan Frontier Not Powering Up Running Light Circuit
    I would recommend using a circuit tester like part # PTW2993 and test the the pin on the trailer connector that corresponds to the brown wire. I would recommend confirming that you definitely have the tow package, as part # 118339 will not work on vehicles without the OEM tow package. If this part is used on a Frontier without the tow package, the running light circuit will not work without adding a relay available from the dealer. Part # 33525 is designed for vehicles that are not equipped...
    view full answer...
  • 5-Way Flat Trailer Wiring Harness for a 1999 Harley Electra Glide
    I can tell you what you will need to install a 5-Way flat connector on your 1999 Harley Electra Glide but we do not have any custom fit wiring harnesses for any motorcycles. Harness # 33525 was designed for a 2005 or 2006 Nissan Frontier. All you really need is a vehicle side 5-Way connector such as # C58545. All you would need to do is splice in this harness to the appropriate wires on the bike. The white wire is ground, brown is running/tail lights. Yellow is normally left turn signal...
    view full answer...
  • Availability of a Vehicle Wiring Harness for a 2013 Nissan Frontier
    I have a solution for you, but the Hopkins Plug-N-Tow Wiring Harness, # 33525, will not fit the 2013 Nissan Frontier. The Curt Wiring Harness with 4-Pole Flat Trailer Connector, # C56225, is confirmed to fit your 2013 Nissan Frontier truck. The wiring harness will include the needed relays that will activate the lighting functions on your Nissan Frontier. I have attached a couple videos on this T-One harness for you to review. One is a general review of the harness and the other video...
    view full answer...
  • Comparing the Trailer Wiring Harness Options for a 2006 Nissan Frontier
    The Tow Ready Wiring Harness, # 118263, is designed to fit your 2006 Nissan Frontier as long as it has the factory tow package. On the other hand, Hopkins lists the # 33525, as a fit for all models of the 2006 Nissan Frontier. From what we have found, though, if the vehicle does not have the tow package, you will still need a relay available from the dealer in order to allow it to function. If your Frontier does not have the tow package, I recommend using the Curt Harness, # C56225, which...
    view full answer...
  • How to Wire for Towing Package on 2006 Nissan Frontier
    All Nissan frontiers will have the tow package plug but may not be fully functional if the vehicle was not originally set up with tow package. All the connections must be complete for the T-Connector to function properly. You can test and verify the connector with a light tester like part # PTW2993. Regardless of whether or not the vehicle has the tow package, we have a Plug-N-Tow Wiring harness, part # 33525, that plugs into the wiring for the vehicle tail lights. You can also contact...
    view full answer...
  • Installation a 4-Way Flat Trailer Wiring Harness on a 2006 Nissan Frontier
    There are 2 different wiring situations for the 2006 Nissan Frontier. To determine which is the correct harness, you will need to determine whether or not your Frontier has a factory tow package. The Plug-N-Tow Wiring Harness, # 33525, will plug in between the male and female end of one of the sets of connectors underneath your 2006 Nissan Frontier. You will need to look behind the rear bumper on the driver side frame rail for the connection point. If your Frontier has the factory tow...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
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Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
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Employee Alexander C
Updated by:
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