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Wiring Harness | 2024, GMC, Sierra 2500, Sierra 3500, Sierra 4500


This is a wiring harness for a headache rack for a Gmc Sierra 2500, Sierra 3500, Sierra 4500, and it fits the following years; 2024

Light Type: Universal
Models: Sierra 2500, Sierra 3500, Sierra 4500
Vehicle Make: GMC
Year Range: 2024
SKU: WH-56009-GMC-SIERRA2500P-2024-U Categories: ,
California Residents Only – Prop. 65 Warning

WARNING: Some products may contain chemicals such as DEHP, which is known to the State of California to cause cancer or birth defects or reproductive harm. For more information, go to www.P65Warnings.ca.gov.


When you need an easy solution to install your lighted headache rack, our modular plug-n-play wire harnesses by Magnum are designed for an easy install. These wire harnesses run under the bed, plugging into your truck’s body harness. The plug and play design virtually eliminates the need for any wiring knowledge, giving you a simple solution to power the LED lights on your back rack. Whether it’s for reverse lights, brake lights or turn signal blinkers, the Magnum Truck Racks name guarantees quality.

Additional information

Weight 5 lbs
Dimensions 10 × 6 × 6 in

Sierra 2500, Sierra 3500, Sierra 4500



Year Range


Light Type


Vehicle Make