Install of rock lights was rather easy. Cost was only about $50 with the $10 light harness, $20 lights, $20 switch and the miscellaneous $10 in additional wire, connectors and electrical tape. He aware of you install that some the harnesses out there are made in China so the wire colors don't match up. Its completely easy to do. I'm not the most talented in electrical or wiring and I managed to do this easily. I was also able to install the ditch lights easily too and I look forward further light upgrades. If you need any help or advice let me know I'll help to the best of my knowledge.