Tekonsha Prodigy P2 Trailer Brake Controller w/ Custom Harness - Up to 4 Axles - Proportional
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2025 Ram 1500
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2025 Ram 1500
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The Tekonsha P2 is a classic brake controller you know you can rely on. It's easy to install, and with the custom harness, it's plug-and-play.
Features:
Specs:
Gain is the maximum amount of power that will be applied to your trailer's brakes. How much braking output you need is determined by the weight of your trailer; a heavier trailer will need more power to bring it to a stop. You want to go as high as you can without the trailer brakes locking up.
You can adjust the gain by turning the thumbwheel on the front of the controller.
The boost setting controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. If your vehicle takes too long to come to a stop, increase the setting. If it stops too abruptly, decrease the setting.
Depending on the level of boost, your trailer brakes can start at either 13 percent or 25 percent of the set gain. So instead of starting at 0, the brakes will start at 25 percent and get to 100 percent sooner. This keeps the trailer from pushing your tow vehicle forward.
Boost Levels:
| Approximate Gross Trailer Weight | Boost Level | Increase in Initial Power Output |
|---|---|---|
| Less than tow vehicle GVW | B1 | 13% |
| Equal to tow vehicle GVW | B1 or B2 | 13% or 25% |
| Up to 25% more than tow vehicle GVW | B2 or B3* | 25% |
| Up to 40% more than tow vehicle GVW | B3* | 25% |
*Both B2 and B3 offer a 25-percent boost in initial power. But the braking curve for B3 is more aggressive than that of B2. This means that, even though you will start out with the same intensity when using these boost levels, you will get an overall more aggressive braking experience with the higher level. So if you use B3, you will reach maximum braking sooner than if you use B2.
To engage the manual override, twist the rotary-style lever from right to left. This will activate the trailer's brakes and brake lights independently of your vehicle, great for stopping sway or controlling your trailer's momentum in an emergency.
The Prodigy P2 offers key safety features to prevent damage to your towing setup:
- Integrated reverse battery protection shields the brake controller and your trailer's breakaway system from shorts.
- When the P2 is not in use, it draws only 3.6 milliamps to minimize the drain on your vehicle's battery.
- Any time your vehicle and trailer are at a standstill with the brakes applied for more than 5 seconds, the hold feature will kick on and reduce power to just 25 percent. This will keep your trailer in place without your brakes overheating.
The Prodigy P2 also runs continuous diagnostics to check for problems as they come up, including:
Installing the P2 is incredibly simple. You'll mount the bracket to your dashboard then mount the unit to the bracket. Plug the custom harness into your vehicle and into the unit. Done!
Keep in mind that the P2 must be horizontally level and parallel with the direction of travel to work correctly.
With a replacement wiring harness (sold separately) and replacement bracket (P7685 - sold separately), you can even transfer the Prodigy P2 to another vehicle.
Note: If you don't already have a 7-way plug at the back of your vehicle, take a look at our exclusive 7- and 4-way brake controller installation kit (ETBC7 - sold separately).
Proportional braking means that your trailer brakes mimic your tow vehicle's brakes. If you slam on the brakes, your trailer brakes will activate with the same intensity; if you brake lightly, your trailer brakes lightly too. The trailer's braking is in proportion to your vehicle's braking. This saves wear and tear on the tires and the brakes on both your vehicle and trailer.
The Prodigy P2 uses an internal inertia sensor to detect how your vehicle is braking so it can send the right amount of braking power to your trailer. It measures the inertia of your tow vehicle and activates the trailer's brakes to slow at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.
Alternate Instructions
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Speaker 1: Today on our 2014 Ram 1500, we're going to be taking a look at and showing you how to install the Tekonsha Prodigy P2 Proportional Trailer Brake Controller for one to four axles, part number 90885. Now, to help us in our installation, we're going to be using the Tekonsha Custom Wiring Adaptor for trailer brake controllers, part number 3023-P.Here's our Prodigy P2 installed and what it looks like. Now, our Prodigy P2 is a proportional brake controller, which means it's going to apply the brakes in the same intensity at the same time that it senses our vehicle slowing down. That's because it has an internal inertia sensor that's going to detect the deceleration of our vehicle. Opposed to time delay brake controllers, which are just going to have a slight time delay, and they're going to slowly ramp up the power going to your brakes until it reaches the maximum.Now, the one thing that I really like about the Prodigy P2 is that since it is proportional, if we're at a stoplight, we don't want to brake to the maximum power because we're not moving. We don't need that much power going to our brakes.
We probably want to save them a little bit. Now, the nice feature of this is if we apply the brakes and we're not moving, it won't apply any power until five seconds since the brake pedal has been depressed. Then, it's going to apply 25% of the maximum power to hold the trailer in place.The blue dial on the left here is going to be our power output. We can go all the way up from 13, and that's going to be displayed in volts. Now, our truck is not on, so it's not going that high.
It can go up to 13 volts, and go all the way down to zero, which would be applying no power to the brakes.Now, on the bottom of our controller, we're going to have a lever right here. That's going to be for our manual override. If there's ever any situation where you need your trailer brakes to come on without applying your vehicle's brakes, you can simply reach down and pull the lever and slowly apply the brakes all the way to the maximum, sweeping the lever all the way.The blue button on the right is going to be for our boost settings. Now, there's four total settings, boost off, boost one, two and three. Now, we're going to know, just by looking at our display here, if the boost is on or not.
As we can see, we have one dot and a C. Now, if I turn the boost on to boost one, we can simply glance down at our controller and we can see the two dots along with the C, letting us know that our trailer is connected and the boost is on. Now, each level increasing on the boost is going to apply the brakes more quickly and ramp up to the maximum power. If we had the boost off, it's just going to apply the brakes with the power the way that we have it set. If we have it on boost one, it's going to be a little bit more aggressive.
Each setting is going to be a little bit more aggressive going up.Along with the internal inertia sensor that's going to detect the deceleration of our vehicle and apply the brakes, there's also an auto-leveling sensor inside, which is going to compensate and automatically level whether we're going up or down hills even.Since it's a proportional brake controller, all we really have to worry about is that we mount it nice and level and in the direction of travel of the vehicle. Now, we do have an option to mount it more level this way or angling it up or down. Now, our brake controller is going to let us know if our trailer is connected by putting a C in the display. If the trailer is not connected, it'll say NC.Another feature of our Prodigy is that it will proportionally brake in reverse, applying the right amount of voltage based on how much we're slowing down. Then, our Prodigy P2 is designed to work for trailers from one all the way up to four axles. Now that we've gone over some of the features, let's show you how easy it is to get installed.To begin our installation, we're going to need to find the two connection points under our dash for our brake controller adaptor harness here. Now, one of the connectors is going to be a four pin connector with a rather large square plug. The other one is going to be a smaller two pin connector. Now, the easiest way to find it is if we come to the hood release right here at the bottom of our dash. We just move slightly over to the right side toward the passenger side, and we actually go directly underneath and behind the dash, we're going to find this plug.You may or may not have some kind of tape or insulation wrapping around it, because it's not being used from the factory. We can simply take the one end of our harness and we can plug it in to the other end coming off of our vehicle. We want to plug in, make sure it locks into place. The way we're going to find the other end that goes here is if we come to our brake pedal and follow it all the way up, and we, again, go just slightly over the passenger side, there's going to be a connector that has electrical tape taped to another harness. Now, once we've found the connector that we're going to need it connected to, we can go ahead and plug it in. We want to make sure it locks into place.Now, the nice thing about this harness is that it's going to give us all the information we need at our plug for our brake controller. The big gray harness is going to give us our power ground and brake output. The red wire is going to tap into the brake signals, so it knows what to send to the brake controller. Now all we have to do is mount up our controller and plug it up. We need to find a nice location to put our brake controller that's not going to be in the way of our legs or our feet.We're going to be using the traditional mounting bracket for our brake controller. Now, the only thing you need to pay attention to is you want to try to get this as level as possible. The brake controller needs to be in the direction of travel of the vehicle. We're going to mount ours kind of low right here by bottom of the dash. We're going to be taking some of the provided screws, and we're just going to screw directly into the plastic. I just do want to mention, you want to double check to make sure that there's nothing behind the dash here that you may screw into and cause any damage.I'm going to take a Phillips Head Bit, and we're going to start to screw my bracket right into the dash here. I'm going to leave that one screw just a little loose, so we can make sure that it's nice and level. Then, we can put our second screw in and tighten them up.Now, on the side of our brake controller, we're going to have these holes, one on each side. We're going to need to line those up with the bracket we just put in, and then we can take the machine screws that are provided in our kit, go through our bracket and into the controller. Line up the holes, get our screw started. I'm going to come back with the Phillips Bit and tighten it up. With that one in, we can go and repeat that and get the other screw in as well.With the brake controller mounted, we can go ahead and take the end of our harness here. At the back right hand side, or towards the passenger side on the back of our brake controller, is going to be the plug. We can reach back there, and we can plug it in. We can see by the NC on our brake controller, we know that we're getting power. The NC is going to stand for not connected. Now all we have to do is to tidy up our wires underneath the dash, maybe with a couple of zip ties so they don't get in the way of our feet and get tangled up. Now when we see the NC on our brake controller, we're going to know that it's not connected to a trailer. It's going to let us know by having that NC on there.That'll finish up our look at the Tekonsha Prodigy P2 Trailer Brake Controller, part number 90885, on our 2014 Ram 1500.
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