I'm kinda embarrassed to even ask this question but oh well. I've got a 2017 4.6L Tundra, the most basic trim model - was actually a fleet type vehicle before I owned it. I'm guessing it doesnt have a OEM brake controller. I have a tandem axle car hauler that I plan on pulling and hauling stuff with. The most heavy loads will likely be a tractor that weighs 3000lbs dry, so maybe with an tractor implement lets say my max trailer weight will be 4500 lbs. Question is, do I need to have a brake controller installed, if in fact my rig doesnt have one?