If you don't find your pigtail, some of the internet dealers will send one with a controller (if you order for a specific truck) or will charge very little for it. Your manual might give you a picture of where it plugs up. If not, it will give directions, so grab your Mag Lite and "hunt ferim". (That's coon hunter language for "hunt for him!")(No, I don't coon hunt!) You know, though, if you don't get a Maxbrake or Brakesmart that you will be a second class citizen on TDR (like me)!!!! LOL!! Mark