This video shows how to install a tailgate light bar on a 2017 Chevy Colorado.
Redline Triple LED Tailgate Brake Light Bar with Reverse & Sequential Turn Signals http://www.opt-7.com/redline-triple-led-tailgate-light-bar-with-reverse-sequential-turn-signals/
OPT7 Redline Dual 7-Pin Splitter to 4 Foot 4-Pin Extension Adapter Harness: http://www.opt-7.com/opt7-redline-dual-7-pin-splitter-to-4-foot-4-pin-extension-adapter-harness/