Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Part Numbers: 39523, 20127
Retail:$72.77
Price:$65.94
Shipping Special

Easy-to-use brake controller activates your trailer brakes electronically when you engage the brakes in your tow vehicle. Set braking intensity to your preference and towing application.
Features:
Specs:
Unlike pendulum-style controllers, which react to the inertia that is created by your tow vehicle slowing down, the PowerTrac applies your trailer's brakes when the brake pedal in your tow vehicle is engaged. The trailer brakes will be activated with an intensity set by you. This output (amount of braking power) is adjustable to suit your preference, as well as road conditions, type of trailer and load. You can also apply the brakes manually with the integrated override.
Because inertia plays no role in the functioning of this controller, you do not have to mount the unit at any particular angle. As a result, mounting options are nearly limitless. After mounting the unit, hardwire the end of the included pigtail harness directly into your vehicle. For even easier installation, a vehicle-specific wiring adapter (sold separately) is available for certain vehicles. One end of the custom adapter plugs into your vehicle, and the other end plugs into your controller - no hardwiring required. To transfer the PowerTrac to another vehicle or to remove it for storage, just unplug the unit and remove it from the mount.
Note: For vehicles without brake-control wiring adapters, a 20-amp circuit breaker (9506P - sold separately) is required.
See also etrailer.com's exclusive 7- and 4-way brake-control installation kit (ETBC7 - sold separately) that includes all the parts necessary to install the PowerTrac brake controller.

Tow Ready Replacement Plugin Harness for the Tekonsha P3, Voyager, Prodigy, and Primus Brake Controllers. Also works with Draw-Tite Intella-stop Xtreme, Intella-stop Ultra, Intella-stop Digital and Activator III (5520) brake controllers.
Video of Trailer Brake Controller Installation - 1991 Ford F-150
Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Today on our 1991 Ford F150, we will be installing the Tekonsha PowerTrac electric brake controller, part number 39523 in conjunction with the ETBC7 Brake Controller wiring as well as the replacement brake control plug in harness for Tekonsha and Draw-Tite type brake controllers, part number 20127. We will begin our installation here at the rear bumper. We will need to install the bracket to the rear bumper that will hold our 7 pole connector. We will take the bracket and the hardware, put the bracket in place here in the redrilled holes. Slide the bolt through, put the washers on the other side and lock it down with the nut. With both bolts in, we can go ahead and tighten it down securing it to the rear bumper. We are now ready to put the 7 pole into the bracket. We will take our 7 pole connector and the hardware here, put the connector into place making sure that the wires pass through the bracket and with our connector in place, we will pass the bolts through the connector, through the bracket, put the nut on the other side and tighten them down.
With all four bolts in and tight, our 7 pole is secured to the vehicle and we are ready to wire it up. To wire it up, you will notice that the 7 pole has a 4 pole on the other side. This vehicle already has a 4 pole so we will simply plug it in to our new connector and lock it down with a zip tie. This will ensure that it never comes apart where we can then wrap it in electrical tape further securing it and keeping the elements out. With that connection made, we will go ahead and secure it back to our hitch here using a couple of zip ties. We will now move on to our ground and reverse light lead. The white wire here with the ringed eyelet our ground and the purple wire with the yellow butt connector on it is our reverse light lead.
We will not be hooking this up so we are going to go ahead and attach the purple wire to our white wire just to keep it out of the way. With that done, we will find a good grounding location and using a self starting screw, we will attach it here to the frame of the truck giving us a good ground. We will again make sure that all our wires are neatly tucked away and secured with some zip ties. We are now ready to work on our brake control wiring. We will take our duplex wire, remove the sheathing and attach the white wire to the blue wire here on our 7 pole. We will take the black wire and attach it to the black wire of our 7 pole.
With that done, we will go ahead and wrap it in electrical tape just to keep it out of the elements. We can then secure it to the hitch and begin running our wire up to the front of the truck. As we run it up to the front of the truck, we are going to try to stay away from anything hot such as the exhaust or any moving components such as the vehicles suspension or steering as we route the wire. Before we move back to the top side of the truck, we are going to take the included corrugated loom and wrap it around our 7 pole wiring just to give it a good look.Now that we are done underneath the truck here, we move up to the top side. Here in the engine compartment of the truck, we will route our duplex wire up where we can now cut the majority of the sheathing left off of the wiring.
Our white wire, we will route through the firewall of the truck and into the cab. The black wire will continue up the firewall and around to our battery. Here at our battery, we will need about an extra 8 feet of our duplex wire. This will be our power and ground for the brake controller. We will start here at the battery and work in the same way that we ran the black wire back to the firewall where we can then pass it through the same hole that we ran the white wire through. With that done, we will move into the cab where we will mount our brake controller.We will find a suitable location and using the self starting screws, we will attach the brake controller mounting bracket to the dash of the truck. With that done, we can now attach our brake controller to the bracket using the included screws coming with the brake controller. Now that we have our brake controller mounted, we will move over back to our wiring. We will take our replacement brake control plug in harness and the wires that we ran into the truck from the firewall. We will connect the white wire from the duplex wire to the white wire on the harness. We will connect the black wire on the duplex wire to the black wire on the harness. We will take the white wire that was by itself coming through the firewall and connect it to the blue wire of our wire harness. The red wire will need to make a connection at our brake light switch. We are going to go ahead and extend our red wire just to make sure we can route it without getting in the way of any steering components or other electric accessories.We will now locate our brake signal. Heres our brake switch where we will back probe our connector. We will want to connect to the wire that energizes when you press on the brake. Now that weve located it, we will now take the wire tap included with hour ETBC7 and connect the red wire to the solid green wire on our brake light switch. You may need to peel the sheathing from the brake light switch wiring in order to get enough wire to tap it. We will now go ahead and plug the harness we just assembled into the brake control harness and secure it up underneath the dash. With that done, we will just make sure that our wiring is all secured underneath the dash where we can reinstall the cover that we removed previously.With everything done there, we will move back out to the engine compartment. We will take our 20 amp fused breaker and attach it to the firewall here. We will have three wires, two black wires as well as one white wire. The black wire that is within the duplex wiring sheathing will cut off, strip it back, and attach our small ringed eyelet included with the ETBC7 kit. We can then take the ringed eyelet and put it over the silver side of the breaker. We will take the excess that we cut from the black wire and attach another one of the small ringed eyelets and we will put it on the copper side of our breaker. This wire will run to our positive terminal on our battery. We will take the 40 amp breaker included with the ETBC7 and attach it to the side of the truck here. We will now take the black wire thats by itself and attach a small ringed eyelet to it. With that done, we will take the small ringed eyelet and attach it to the silver side of our breaker. We will then take another piece of black wire, attach our small ringed eyelet and attach it to the copper side of the breaker. With both breakers in and all of our nuts tight, we will attach the large ringed eyelets to the other side of both black wires where we can now make our connections to the positive side of our battery. We will take the white wire and connect it to the negative side of our battery and with that done, our brake controller is in and we are ready to pull a trailer with brake.That completes our installation of the Tekonsha PowerTrac electric brake controller, part number 39523 in conjunction with the ETBC7 Trailer Brake Wiring Harness as well as the replacement brake control plug in harness for Tekonsha and Draw-Tite brake controllers, part number 20127 on our 1991 Ford F150. .
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Average Customer Rating: 



4.8 out of 5 stars (60 Customer Reviews)




by: Tom04/20/2012
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plugged right in, works wonderful I feel no need for a higher priced one37898




by: William03/08/2013
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good product,fast shipping 69589




by: Gary H02/23/2013
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Just got done installing this brake controller on my 2011 Tucson. It was a whole lot more difficult than everyone says. It was not the product; very nice unit which installed nicely under the dash. The unit only has 4 leads, 3 of which were no issue. All 4 wires had to be extended (understandably). 3 out of the 4 snaked nicely into the engine compartment. I just widened the existing wiring thru grommet going thru and these 3 slid right thru. Black (Hot), White (Ground) and Blue (Output to trailer brakes). What was the bear was the Red lead which connects to the output side of the brake light switch. When I crawled under dash I could not even see this switch. I could only feel it let allone conect a wire to it. The only alternitive I had was to slice the main harness open (still very hard to get at) and then 1 by 1 find out which of the 40 wires had feed when the pedal was depressed. Once I found this, it was still incredibally hard to get a splice on this 1 lone wire. This is not the products fault; it is just the way they engineer cars these days. All in all the product is great! Gary H.67561




by: rene02/18/2013
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Was so easy to install no cutting or headache happy with product66776




by: Phillip H.09/21/2012
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Simple to use. A number read out would be nice for setting the unit but for the price does the job. Pretty compact smaller than I expected.55347




by: Robbie S09/14/2012
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Works great and wasn't difficult to ins tall54697




by: Randy Y.08/23/2012
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Great product and service from etrailer. I would do business with etrailer again.52712




by: Cory B.03/08/2012
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The brake controller was very easy to install, especially with the wiring harness that fit my Ford. It only took ten minutes and when I tried it out it worked perfect. I will always go back to etrailer.com for all my trailer needs. Thanks for everything!! Cory33374




by: jerry s05/11/2011
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customer service diagnosis was accurate---product arrived promply and at a great price--my brakes are better now than ever--thanks13497




by: Robert04/06/2013
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It is exactly what was on your website. I appreciate your videos for quick and easy installation74520




by: Jay K12/13/2012
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Installed easily and everything went great. Fast shipping and great customer service. Etrailer is awesome!61331




by: Matthew12/02/2012
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Very easy to hook up and the price was great.60456




by: Jason R08/29/2012
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Great product and was easy to install. Works very well.53380




by: Bruce N08/27/2012
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Just as mentioned in add it hooks nup to harness in my Dodge Ram 1500 2008 truck and it all works Thank You53177




by: Aaron08/24/2012
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Item works properly. Easy to install 52928




by: Clay Cash10/31/2011
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Very easy to install and looks great in the truck, only wish i would have ordered the pigtail that goes to the truck.26397
I ordered this brake controller for a 2003 Nissan Pathfinder with Universal Installation Kit. Not an easy job since theres no factory harness to plug the controller into. As others have said in the reviews the hardest wire to connect it the red one since it connects to the cold side of the brake pedal switch.There is literally an inch of space and little to no slack on the brake wire plugWhich is the black one on the right with 3 green wires with stripes and a red wire. . The brown plug is the shifter release switch. This was the hardest part of the whole install. The wire and plug was nearly impossible to get to or see. I had to lay on my back and twist sideways with a utility light next to my head shining under the dash. I cut my hand up pretty good getting the white plug disconnected from the black brake switch before I tapped it. The lock on the plug is above the steering wheel shaft so you cant see it or get pliers on it. I had to do it by feel and press with all my might with my right hand and pull the plug out with my left. The wires are covered by black rubber sheath which you have to slit back to the harness before you can tap it.The wire you want to tap on a 2003 Nissan Pathfinder is the GREEN wire with a YELLOW stripe. Once I tapped into that wire I double checked by unplugging the harness from the brake controller and using the LED tester. I clipped it to the metal surrounding the brake pedal, pushed the probe end into the red wire connector on the harness and pumped the brake pedal and the LED lit up!! So I knew I was successful.The rest was easy running wires to the battery and the connector on the back. The other small problem was the 10 gauge duplex wire included with the universal installation kit was literally a few feet short to reach the battery so I had to buy a roll of black 10 gauge at the auto parts store to complete the installation.Ill let you know how it works with the Pontoon Trailer!
comment by: Dan N - 3/17/2013




by: Tim B.05/10/2013
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The control works great. Nice incremental application of wheel from nothing to hard on! Led light goes from green to red also in incremental degrees. Installation was a snap in my 2008 F150 with tow package. Just Plug in the control clip and the other end in the terminal above and to the right of the computer check terminal. Rather than have it below my dash I opted for the cove below the lighter. Etrailer did a nice job of getting out to me right away and kept me informed where this was at all the way to my door. Good Job!79780




by: Rob D.05/02/2013
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Was easy & quick to install. Works great so far. 78671




by: jeff04/24/2013
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Got the unit in a timely fashion. It was an easy install, had it in and working in 20 minutes. I've used it for just under a year and have had zero problems. I would recommend etrailer and this unit to anyone77651




by: Bruce04/20/2013
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Good product easy mount .I just need to set it but Im sure I will Thanks and Peace. Boston Strong. We stand as one Peace77009




by: Cindy04/01/2013
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happy thank you 73793




by: Peter03/19/2013
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I was very pleased with the excellent speedy delivery time (ordered Tuesday a.m. & received Friday a.m.) and everything arrived as ordered and as presented in your details of the products. Installation videos are also a nice back-up aid for installation.71641




by: Randall H.11/01/2012
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Great price and easy to install on my Toyota Tacoma Truck had towing package ..so just mount and plug in !!! Yeah Man ! Etrailer has great install and performance info on product. Thanks for the quick handling and shipping. Good Service !58658




by: Charles A.08/19/2012
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Product was as advertised, and easy to in stall with the wiring adapter.52278




by: Fastfreed08/12/2012
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This brake controller is all you will need. Save your money. For a tent camper or a horse trailer it works flawlessly. Once adjusted you can forget the trailer is back there. The trailer doesn't push your truck at all. 51427




by: David07/28/2012
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The controler did not work, no matter how I tryed to hook up the hot end of it. Also the adapter is NOT the same as the one that came with the truck. I talked with a person at etrailer and she was very helpful trying to get the information I needed. The people at etrailer are very helpful I just picked the wrong products.49655




by: Valerie07/25/2012
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Easy to install, worked fine and made me feel confident about the big hills and water crossings I came across on my trip with the new travel trailer! Easy order, quick delivery, and great follow up from the company!49291




by: Bill H07/14/2012
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This little device demonstrates what all products should strive to be. Easy to install and operate and worked the first time out. Highly recommended.47954




by: Daryl R.06/29/2012
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This break controller and the wire adapter is just what I wanted. It is small, simple to operate, and basic. I got the order faster than expected. Everything works great on my 2010 Ridgeline. I will order from etrailer again. 46290




by: Mike M06/11/2012
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I was impressed with the updates and the follow up of etrailer and when the product came it was so easy to hook up. The wiring harness plugged right in to the factory plug and then all I had to do is mount it. After a few small adjustments it works PERFECT.43628




by: Dan H.06/06/2012
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Arrived within a week. Installation was a snap. A good value for the money. Product works as advertised.42993




by: Mike Flowers05/15/2012
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This is a great product and this place is on the stick. I receives multiple emails telling me what my order status was. The website has lots of useful information. 40625




by: Curtis C.05/15/2012
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Prompt delivery and website had a lot of useful information regarding installing your unit. The unit worked great!40580




by: Richard M.05/14/2012
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Super fast delivery and Easy hook up, The light comes on when hooked to the trailer only, mine works great!40427




by: Tanya Grove05/10/2012
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great 39865




by: Nick M05/08/2012
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The best and not pricy! 39759




by: walter b.04/23/2012
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excellent equipment and real easy to instrall. no problen with this product, that i could in stall myself with out any problens38131




by: Gerald D.04/14/2012
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this my 2nd unit for a newer vehicle they perform great.37161




by: Phil T.04/01/2012
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This is my first brake controller. Easy to install (especially with the wire adapter) and easy to use.35821




by: Reed C.03/28/2012
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I already received my brake controller this past tuesday and insyalled it the same day, noi problem at all. Haven't hooked the trailer up to it yet and will let you know how responsive the controller is and will try and send a pic also. Thanks for being so helpful and it looks good where It............Reed35397




by: Michael D.03/18/2012
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Works great, installation was easy with included adapter harness. Have a 23' 5th wheel as works great.34258




by: Andrew 90903/14/2012
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great service. i will be using them again in the future.33867




by: Matthew T.03/12/2012
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Good product at a fair price. EXCELLENT communication on the part of e-trailer.com!!33600




by: Mike Drone01/07/2012
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I wanted to keep it small and simple since this was going to be in a van. The controller works perfect and it was a great price.29253




by: Andy R.12/02/2011
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Great product! Great price! 27581




by: John A.10/12/2011
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Super product. Installation was less than 20 minutes with the wiring kit.25461




by: michael02/21/2013
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esay installation..took 10 min great co mpany67157




by: DAVID02/19/2013
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works great 66975




by: Kurtis02/07/2013
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Great product! Fast shipping! I have had good luck finding what I need with etrailer! Great place to get your parts??putting on 06 dodge 2500 65334




by: Jerry D.12/19/2012
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Easy-to-follow installation instructions and since there were only a few items to install, it didn't take very long. And, when I hooked my trailer up, the brakes worked!61763




by: Ken C12/03/2012
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Fast, free shipping and easy install, plug and play.60510




by: Cary10/22/2012
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The product was easy to install. The etrailer.com question and answers, plus the online instructions available prior to purchase there were no surprises. I received the product within the time indicated. The quality of the product appears consistent with the description. The added cutomer service on the web page is what made up my mind. No complaints will see how it holds up57858




by: Chet A.09/06/2012
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Great brake controller for the money,easy fit and install.Shipped on time and arrived on time.Works great. Chet54062




by: John W.09/01/2012
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The brake unit with the wiring harness for my Nissan Frontier arrived within a week via US Mail. It was a no brainer to install; But it took me a while to figure a good location for the mounting. It works great!53746




by: Randson H07/06/2012
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Product seems to work good, but have only had it for a short time. Good value tho.46966




by: Craig J.05/29/2012
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Excellent price and service. 41890




by: Tony03/21/2012
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Fast shipping, good prices and great in structions.34697




by: Mike F10/15/2011
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It was Plug and play, pretty straight forward install. 25607




by: MCHAEL04/02/2013
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GOOD PRODUCT! EASY INSTALL! 73859




by: Jerry02/15/2013
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So far I am happy with the purchase but have not tried it yet.66512