I have a 2003 Tundra - I'd have to look fot the brake controller connection as Camping World found it and plugged it in. I'll take a look on my lunch break and check this thread again, but I'm guessing that Ron3rd is correct. If the truck has the towing package, then it is there.
Edit: OK - I looked. The controller is mounted directly under the ignition key and the wire goes directly underneath the panel. You will ahev to take the panel off. I'd also suggest looking in the owners manual, or taking it to an RV or UHaul locatiopn. Good luck.
