Compatible Models: Tow mirrors wiring harness fit for Chevy Silverado 1500 2014-2018, fit for Chevrolet Silverado 2500 HD 2015-2018, fit for GMC Sierra 1500 2014-2018, fit for GMC Sierra 2500 HD 2015-2018 Wide Application: Rearview mirror harness is widely used for cargo lamp (reversing lamp), driving lamp and turn signal lamp. If your vehicle has a factory mirror, you will use these harnesses High Quality Material: Tow mirrors wiring harness is made of high-quality ABS plastic, durable, with an insulating layer to reduce surface hardening. Built in high-quality copper stranded wire, with good conductivity and corrosion resistance, and longer service life Warm Tips: 4-wire, 4-pin, 23.6 inches/60cm long. Blue wire-running light(pin#11), white wire-cargo light(pin#9), red yellow-turn signal(pin#41), black white -ground Package Includes: 2 x trailer mirror harness, 4 x cable ties. Direct replacement, simple installation. Please confirm the correct direction before inserting the pin. If it is inserted incorrectly, do not pull it out with force. If you have any questions, please contact us Compatible with: Fit for Chevy Silverado 1500 2014 2015 2016 2017 2018 Fit for Chevrolet Silverado 2500 HD 2015 2016 2017 2018 Fit for GMC Sierra 1500 2014 2015 2016 2017 2018 Fit for GMC Sierra 2500 HD 2015 2016 2017 2018 Product Description: Name: Tow Mirrors Wiring Harness Material: ABS plastic and copper stranded wire Surface Treatment: Wiring Mirror Adjustment Method: Power Condition: 100% brand new Stable performance, reliable and durable Insulation layer is used on the surface to avoid electric leakage/br> Avoid hardening of the surface due to prolonged exposure Direct installation, simple operation and time saving/br> Warm Tips: Blue Wire: Running Light(Pin #11) White Wire: Cargo Light(Pin #9) Red Yellow Wire: Turn Signal Light(Pin #41) Black Wire: Ground wire (ground to mirror) Product Includes: 2 x trailer mirror harness 4 x cable ties After-sale Service: Products are 100% professionally tested before leaving the factory If you have any questions, please feel free to email mail We will reply you within 24 hours