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Designed specifically for the BMW X4, this Curt custom wiring harness provides a reliable 4-way flat trailer connection. Given the complexity of BMW’s electrical systems, this harness utilizes a powered tail light converter that draws power directly from the battery rather than straining the vehicle’s lighting circuits. This ensures that your trailer lights function perfectly without triggering "bulb out" warnings on your dashboard.
At Rack Attack, we are committed to making your adventures as seamless as possible. To fulfill this promise, we introduce our Fit Guarantee—a pledge that every order placed with us is double-checked to ensure it will be the perfect fit for your vehicle. We don't just ship your orders; we ensure they're absolutely right for you.
On orders over $200 — most ship same day. Learn more
100% satisfaction guarantee or your money back. Learn more
Every order validated by our expert Gear Guides. Learn more
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