14. Brown. Left Rear Speaker (+) IMPORTANT - There are two (2) yellow*, two (2) gray and two (2) brown wires in this harness. Locate the +12 volt constant wire first. Label it or splice to constant wire on aftermarket stereo first. Swapping yellow wires will cause damage to any aftermarket stereo.. Having a Chevrolet radio wiring diagram makes installing a car radio easy. Find the Chevrolet stereo wiring diagram you need to install your car stereo and save time. ... 2018 Chevrolet Silverado 1500 2017 Chevrolet Silverado 1500 2016 Chevrolet Silverado 1500 ... Deanna, ask and you shall receive: 1998 Chevrolet Cavalier Audio Wire Guide. In this article, we consider the fourth-generation Chevrolet Silverado, available from 2019 to the present. Here you will find fuse box diagrams of Chevrolet Silverado 2019, 2020, 2021, and 2022, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.. "/>2020 silverado speaker wiring diagram