BaneofAll

I bought a set of aftermarket tail lights for my 14 Denali. The passenger side harness was long enough to connect to the connection block on the truck. The Drivers side is about 8" too short. The do not hyperflash so the kit with the load resistor is not needed. Does anyone know of an extension I can get; or where I can get the light gray and blue connectors as well as the pins for the connectors in the image? Part numbers would be very helpful.