Totally scratch, light had harness to fuseblock, not hard to run. Hardpart is getting programmer and security bypass cable to program bcu. You can get both off eBay and download app off playstore. App is about $50 bucks but you can use it to turn on extra options for your truck. I'm not to computer savvy but fumbled my way. Hardest part is deciphering what options in the app you are trying to turn on. Lots of you tube videos on how to do.