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For trucks with an aluminum body, such as the 2015 Ford F150, galvanic corrosion can become a problem when installing vehicle-to-trailer wiring without the appropriate protection. This isolator kit allows you to install an original equipment extension or custom wiring harness extension in your truck bed without having to worry about ruining the truck's finish. It includes four bolts for secure mounting and four plastic well nuts to isolate the fasteners from all aluminum surfaces. This kit is compatible with a variety of CURT 7-way RV blade harnesses, including #56000, #56001 and #56080.