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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.
Features:
Specs:
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 tail lights 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.
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.
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.
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi everybody, Andy here with etrailer.com. Let's take a real quick look at this Curt T-Connector vehicle wiring harness with 4-pole flat trailer connector. Now this wiring harness has been designed to fit your 2018 to 2021 BMW X3, and then your 2018 X3 with the xDrive30i, and then the 2019 to 2021 X3 with the xDrive30i and the sDrive30i. 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 4-pole flat trailer connector at the back of your Beemer to power your trailer signal lights.
This will also be compatible with five, six, and seven pole adapters. Those adapters are sold separately, and as you can see here, this does include a dust cap for the 4-pole flat connector. That dust cap is going to cover up those connection points when the plug is not being used. Now the black box on this harness is a powered tail light converter. This is going to make sure that your Beemer's wiring matches out of your trailer.
It connects directly to your vehicle's battery to avoid overloading its electrical system, reducing strain on your vehicle's wiring system. And by the way, Curt builds each converter using surface mount technology for consistent, reliable performance. It maximizes trailer light yield and intensity, while producing minimal heat, ensuring superior operation, especially in rough road conditions. Now this harness, it is designed to connect quickly and easily. You will need to locate your vehicle's wiring harness, which is located in your rear cargo area.
You will have to remove the driver's side and passenger side taillights to access the harness and you will need to remove the spare tire access cover as well. Once you locate the connectors, you're gonna separate them carefully, you wanna make sure that you don't break the locking tabs, and then you're going to insert these T-connector ends between the vehicles wiring connectors and lock them into place. These T-connectors are custom fitted for your Beemer, so they're going to match up perfectly with the connection points on your vehicle and they're gonna snap and lock together for a tight secure fit. Now once you have these plugged in, you will have to make a good ground connection. The ground wire is this white wire and it has a ring terminal attached to it, and it does come with a self-tapping screw, that you can see right there, so that you can get this grounded to a suitable location, such as your vehicle's or crossmember, you just wanna make sure that that surface is clean and rust free.
Next, you will want to mount the converter box to a safe out of the way location, and you can do that a few different ways. If you happen to have another mounting screw on hand, you could run it through the top hole here. It does come with this double-sided adhesive tape, that's a good beginning place, but I don't think this is going to be enough to hold it in place for years to come. So I would use this with another means of securing this, maybe with one of the many cable ties that's included with this kit or again with the screw. So you will have to mount this to make sure that it's not vibrating or shaking around in the back of your vehicle once you have everything closed up after the install. Next, you will need to run the hot lead to your vehicle's battery. That's the short black wire that's coming out of the 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. Once you have the routed end to the vehicle's battery, you're going to take this fuse holder here and then you're going to cut this loop in half, so you have two wires, and then you're going to take one of the butt connectors with one of the wires that you cut in half here and then connect that to the routed end of this black bundle of wire. And then, you will take the other wire that you snipped and put the ring terminal to it and then that ring terminal will get attached to the positive post of your vehicle's battery. This does include a 15 amp fuse, and so that fuse will just be placed inside of this fuse holder, and then it's got a cap there to keep that fuse safe and protected. You can secure any slack in your wiring, again, with the many cable ties that's included with this kit. And once installation is complete, your four-way connector can be stowed inside of your cargo area. Instructions are also included to guide you through the installation process. It is also recommended that you use a small amount of dielectric grease on all of your electrical connections, like the plugs on the vehicle and the 4-pole flat connector itself. That grease is designed to help prevent electrical failures caused by corrosion and moisture. So on your screen, I am including our part number for that grease. You can just take that part number, pop it in 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 look today, I do hope that our brief time together was helpful for you. Again, my name is Andy, thank you for joining me.
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