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  6. Powered Converter
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
CURT

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Part Number: C64RJ
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$104.19
Retail:$146.95
You Save: $42.76
Custom Fit Vehicle Wiring

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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C64RJ or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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CURT Custom Fit Vehicle Wiring - C64RJ

  • 4 Flat
  • Custom Fit
  • Trailer Hitch Wiring
  • Powered Converter
  • CURT

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily
    • Locate connection points behind the driver's-side and passenger's-side tail lights
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly to battery to avoid overloading vehicle's electrical system
  • Constructed using surface-mount technology (SMT) for consistent, reliable performance
    • Maximizes trailer light yield and intensity while producing minimal heat
    • Ensures superior operation in rough road conditions
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 5 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area. You will have to remove the driver's-side and passenger's-side side panel hatches to access this harness. You will need to remove the spare tire access cover. Once you've plugged in the T-connector, run the hot lead to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.


Once installation is complete, the 4-way connector will be stowed inside your cargo area.


It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.


Powered Tail Light Converter with Surface-Mount Technology

A tail light converter is built into this T-connector. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.


Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.


Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.


Curt SMT Circuit Boards

Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.


Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.



56534 Curt T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Installation Details C64RJ Installation instructions

This Product Fits The Following Vehicles

  • 2015 - 2018 BMW X5
  • 2015 - 2018 BMW X5 excluding M Sport package or M models
  • 2015 - 2018 BMW X5 M models



Video of Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of CURT Custom Fit Vehicle Wiring - T Connector Vehicle Wiring Harness 4 Pole Flat - C64RJ

Hi everybody. Andy here with etrailer.com. Let's take a look at this CURT T connector vehicle wiring harness with four-pole flat trailer connector. Now this wiring harness has been designed to fit your 2015 to 2018 BMWX 5 and on custom fit parts such as this wiring harness I do recommend taking advantage of our vehicle fit guide here at etrailer.com. Simply input the year, make, and model of your vehicle and our fit guide will confirm if this harness will work for you or if we have something comparable that will work for you. Now this harness is going to give you a four pole flat trailer connector at the back of your Beamer to power your trailer signal lights.

This is also going to be compatible with five, six, and seven pole adapters and those adapters are sold separately. As you can see here, a dust cap is included to cover up those connection points when this plug is not in use. And then we have a black box on this harness that is going to be your power taillight converter. This is going to make sure that your Beamer's wiring matches out of your trailer. This connects directly to your vehicle's battery to avoid overloading its electrical system.

It's gonna help reduce strain on your vehicle's wiring system. By the way, CURT does build each converter using surface mount technology for consistent, reliable performance. It maximizes trailer light yield and intensity while producing minimal heat, ensuring superior operation in rough road conditions. Now this harness is designed to connect quickly and easily. You will need to locate your vehicle's wiring harness and when you find that harness, which you'll do is you'll just disconnect the plugs on the harness and then you will plug these T connectors in between them.

And you wanna be careful not to break the locking tabs. And then you'll just, like I said, carefully insert these key T connector ends between your vehicle's wiring connectors and lock them into place. Now these T connectors are custom fitted for your Beamer, so they're gonna match up perfectly with the connection points on the vehicle. They're gonna snap and lock together for a tight secure fit. The instructions will guide you as to where that harness is, where you need to get to, on your BMW to find those plugs to plug these into.

But once you have these plugged in, you will need to make a good ground connection. And the ground wire is this white wire. If you notice, it does have a ring terminal attached to it. Also comes with a self-tapping screw. So you can get this grounded to a suitable location such as your vehicle's frame or cross member. You just wanna make sure that that surface is clean and rust free. Next, you will want to mount your converter box to a safe, out of the way location. You could do that with another self-tapping screw if you have one on hand. This does come with double-sided adhesive tape and that's good to get it set into place. I don't think this is gonna hold it over the long term. So maybe you could use one of the included cable ties to secure this additionally. But you just wanna make sure that it's mounted to an out of the place location to where it's not gonna fall and rattle around over time. Then you will need to run the hot lead to your vehicle's battery. That's a short black wire that's coming out of this converter box. This short black wire is going to get connected to one end of this included bundle of black wire using one of the included butt connectors. And then the other end of this bundle is going to get routed to your vehicle's battery. And once you have this routed to the battery, you're going to take this fuse holder right here. You're gonna snip that wire in half and then you're gonna take one of those wires with the second butt connector and connect it to the routed end of this black bundle of wire. And then the other wire here is going to get a ring terminal attached to it, this one right here, and then that ring terminal is going to connect to the positive post of your Beamer's battery. This will open up and you can just slide in this 15 amp views. And so that's gonna go into this fuse holder right here. And then you'll just close that cover and that'll keep that fuse protected and safe. So as I mentioned, you are gonna get quite a few cable ties. You can use those cable ties to secure any slack in your wiring. And then once installation is complete, you could keep this in your cargo area when it's not in use or we do have bracketing options to where you could get a bracket to secure to mount this permanently outside of your vehicle, near your trailer hitch receiver. And we do have those options here at etrailer.com. As I mentioned, instructions are included and those instructions will guide you through the insulation process. And I would also recommend that, if you don't have some, to get your hands on some dielectric grease for electrical connections, as you can see there on your screen. That grease is designed to help prevent electrical failures caused by corrosion and moisture and is recommended that you put the grease on the four-way flat and even on the connectors inside the vehicle themselves. So if you are in need of some and you don't currently have some on your screen, I am including our part number for that grease. You can just take that part number, pop it into the search field of our website, that will take you to that grease and you can add that to your order. Well, I think that's gonna wrap up our quick look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.

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

  • Recommended Trailer Hitch And Wiring For A 2015 BMW x5M
    Hi Matthew, For a 2015 BMW x5M you would need the etrailer Trailer Hitch Receiver # e84AR. This is going to replace the bumper beam and just have the receiver tube sticking out for a cleaner look. The installation is a bit involved because removing the fascia on a BMW requires a lot of care but is doable if you're a DIY kind of person. If not, you can use our installer locator (linked below) to find a shop near you to complete the installation. If you're planning on towing a trailer...
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Andy C
Installed by:
Andy C
Employee Sabrina W
Written by:
Sabrina W

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