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Trailer Brake Controller Installation - 2015 Toyota Tundra

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How to Install a Trailer Brake Controller on a 2015 Toyota Tundra


Today on our 2015 Toyota Tundra we're going to take a look at and show you how to install the Tekonsha Prodigy P2 Proportional Trailer Brake Controller. Works great for one up to four axles, part number on it is 90885. We're also going to be using the Tekonsha Plug-In Wiring Adapter for electronic brake controllers, part number on that, 3017-P. The P2 also offers safeguards built right in to the system to protect your vehicle, your trailer, and the brake controller itself. It defends the brake controller and trailer brake-away system system against shorts. It's going to help to prevent any overheating we might experience on those long stops by slowly reducing the power output going to the brakes, and it also minimizes the drain on the battery. When not in use it only draws 3.6 mA. The P2's going to be an excellent choice in brake controllers.

This is a proportional brake controller so what that means is that this is going to activate based on how quickly our towed vehicle's decelerating. There's a sensor inside that's going to pick up on that and it instantly sends power back to the brakes whenever it's needed rather than the pausing that we get with some kind of time delayed system. Another great thing is that this is a self-leveling brake controller so no matter if we have it flat, angled upward or downward, as long as we're keeping it on that same plane we can mount this in any position. You can see we've got three integrated boost levels, 'B' with nothing beside it's off, B1, 2, and 3. This is going to set how rapidly and how aggressive our brakes come on, allowing us to change it for different situations. Here on the bottom is our manual override lever. This is going to provide braking power to the rear, all the way up to whatever we have our controller set at.

No matter if we reach up and grab that override lever really quickly to help in a emergency situation we're not going to have to worry about it over-braking. As you can see there it's designed to stop wherever we have our setting. The first thing we're going to do is locate our factory plug-in for the harness, that should be located right behind this panel, right here. Just want to pop it off easily, we don't want to damage it, do any damage to the panel or to the locking tabs in behind it. You'll see just that little lip that kind of holds it in. Then located right behind that - now it wasn't plugged in this time but a lot of times it's plugged into this little slot right here - will be our plug.

We pull that out, bring in our 3017-P plug, plug that in, make sure we got a good connection. Then at that point we'll just tuck it in. We'll bring the side that's going to run to our brake controller. We'll just run that down so it will come out behind the dashboard there, just like that. Now we can go ahead and clip that panel back in behind that lower panel, pop it into position and then pop our lower panel back in place, just like that. All right we've got our harness mounted, now lets go ahead and take care of mounting the brake controller itself.

It's going to use this bracket, bracket lines up with the holes on the side. We kind of just want to see where exactly we can place it without it interfering with anything. We're going to mount it about right there. Somewhere where it's going to be up and out of the way but still easy to get to. To mount the bracket we're going to use a couple of the provided self-tapping screws. Then we'll bring the end of our pig-tail, slide that right into the back of the brake controller. Give it a push-pull to make sure it's connected firmly. Just to keep everything looking nice and clean we're going to tape this up so we don't just have random colored wires that we can see coming out from under our dash. Then we'll just line that up with our holes that are in our bracket there. Then we're going to thread in this time the machine screw, and then we'll just use a Phillips bit to tighten those down. All right, we can run our manual override, we get an 'NC', that means not connected or no trailer connected. Now all we have to do, we know we've got our power, we're getting our signal. Lets go ahead, use a a few zip ties and get our pig-tail wired up out of the way. All right, now we can connect our simulated trailer, check it out, make sure everything's working as it should. Now with our trailer connection made you can see we've switched over to 'C', that's going to indicate that we've got a connection. That's great because it gives us constant diagnosis of our trailer situation. If it we're to ever come unhooked or any issue where to arise it's going to let us know here by flashing that 'NC'. All right, now from inside the vehicle to test out the system I'm just going to operate the manual override lever. What we want to see on the tester there is both the brake current and voltage to increase as I increase the power. All right, controller's doing it's job, that's perfect. All right, with our brake controller working as it should, that's going to complete today's installation of the Tekonsha Prodigy P2 - part number 90885, also using part number 3017-P - on our 2015 Toyota Tundra.


Oscar

3/15/2019

Very good. Installation was easy. My book showed the connector behind the left panel on the drivers side next to the floor.

Etrailer Expert

Rachael H.

3/15/2019

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