Curt 4-Way Flat Trailer Connector w/ 60" Harness and Wire Taps
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2015 BMW X3
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2015 BMW X3
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Quick-splice wire taps let you splice this 4-way flat trailer connector into your vehicle. Bonded wires are color coded to make installation a little easier.
Features:
Specs:
Because the color/function of the wires on this connector may not match the color/function of those on your vehicle, be sure to use a tester (sold separately) to double check the function of each wire on your vehicle's tail light wiring harness before installing this connector. Once you've figured out the functions of your vehicle's wiring, use the included quick-splice connectors to connect the corresponding wires on the trailer connector. Quick-splices, or "wire taps," offer a quick way to make connections without you having to strip and twist wires. Just place the wires in it and snap the cover down.
The number 1 reason trailer wiring comes up faulty is a bad ground, so make sure your ground wire has a solid and clean connection to metal. To make this connection, you'll need a self-tapping screw and a ring terminal (sold separately).
| Wire Color | Wire Function |
|---|---|
| Green | Right turn and brake light |
| Brown | Tail lights and running lights |
| White | Ground |
| Yellow | Left turn and brake light |
Quick Tips:
We install a lot of wiring harness around here, so we thought we'd share a few tips we've picked up over the years:
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Ken L.
10/24/2014
I finally got it installed. My 87 Jeep has had the wiring modified several times in its life so nothing was as it was supposed to be. I finally got all of the previous mistakes unwired, returned it to normal and then added the connection for the trailer. It was easy to install and worked perfectly. I like it and use it all the time.
Heather A.
8/23/2018
This Curt 4 pole part C58044 is a hardwire installation. I have attached a video of the hardwire installation for part # 18252 on a 2003 Pontiac Grand Prix. It is a different part number but the same installation. Although, I do recommend part # 56076 custom fit plug and play wiring harness for this vehicle. The plug and play option is a much easier installation.
Helpful Links
Custom-Fit-Vehicle-Wiring/Curt/56076.html
tv-install-trailer-wiring-2003-pontiac-grand-prix-18252.aspx
James
3/24/2021
Harness is still like brand new. The cover cap keeps the contacts nice and clean when not in use. Would buy again anytime.
Paul
8/21/2022
Great, no issues. As good as the day I put it on.
Dan A.
8/28/2013
Thanks for posting that. I was wondering the same thing. I need the other end, for the trailer to tow with my truck.
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
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Heather A.
9/10/2018
The 4 pole trailer connector part # C58044 is designed with a green wire, yellow wire, brown wire and white wire. The green wire wires into the right turn wire of the vehicles wiring harness. The yellow wires into the left turn signal of the vehicles wiring harness. The brown wire wires into the tail light signal. The white is the ground wire that needs to be grounded to a clean bare metal surface on the vehicle. A ring terminal that accepts 14 gauge wire such as part # DW05737-1 can be used to ground the white wire. If you would like an end cap on the 4 pole connector I recommend part # 20112 by tow ready to protect the end of the connector. I have also attached a wiring help article to assist with the installation.
Helpful Links
Accessories-and-Parts/Deka/DW05737-1.html
Accessories-and-Parts/Tow-Ready/20112.html