need wiring schemetic 2015 silverado 2500hd

[94yj]

i am trying to add upfitter switches and i need a wiring diagram for the wires and colors at the center switch bank and where they are routed after they leave the back of the switch bank all help and pictures is greatly appreciated tia

[JD110]

It's available at GMupfitters website. Search for aux switch bulletin. Switches are fused in under hood fuse panel. You will have to buy a connector that plugs into the drivers lower panel to connect your accessories.