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Trailer Brake Controller Installation - 2013 Jeep Wrangler Unlimited

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How to Install a Trailer Brake Controller on a 2013 Jeep Wrangler Unlimited


Today on our 2013 Jeep Wrangler Unlimited well be installing the Prodigy P2 brake controller, part number 90885 along with the seven pole install kit ETBC7. Well first take our seven pole mounting bracket and install it onto the new seven and four pole connector. Using the hardware provided with our install kit we can secure it. Next well take the seven pole bracket and attach it to the Tow Ready Universal mounting bracket, part number 18140. Well go ahead and attach the universal mounting bracket to the hitch with the clamp provided. Now, before we install the seven pole connector and bracket onto the hitch well go ahead and remove the manufacturers four pole to make room for the seven pole bracket.

With our new seven pole connector attached to the vehicle we can go ahead and start making our wire connections. First, before we make any of our wiring connections were going to go ahead and trim back the purple wire as it will not be used in this application. Well take our grey duplex cable provided with our install kit and strip back several inches of the cover. Now we can strip back both wires. The black wire we can then attach to the black wire coming from the seven pole connector with the preattached butt connector.

Well repeat the same process with the white wire from the duplex cable and the blue wire from our seven pole connector. Now with those connections made well make a connection with the manufacturers four pole and the four pole connector coming from the seven pole connector. Now with all our connections made well go ahead and take some black electrical tape and wrap up our wires. This will help keep out any dirt, dust, debris and moisture from the connections. Next well take the white wire with the preattached ring terminal route it over to the frame and attach it with a self-capping screw.

Next well go ahead and take some long zip ties that are not provided with the install kit and secure the wiring to the back of the hitch. Now with our wires secured well go ahead and take the grey duplex cable and start routing it up to the engine compartment. Keep in mind when routing any of your wires to stay away from moving components such as steering or suspension or excessive heat such as the exhaust. For this application to assist in routing our wires well use a pull wire, which could be a stiff piece of wire or in this case well be using a piece of air tubing. Also on this application we have an open frame which means well be able to route the wire inside the frame up to the engine compartment.

Now with our wire routed to the engine compartment well go ahead and pull it up where we can gain access to it at the top of the engine. Next we need to go ahead and make a hole in the firewall to route our wires into the cabin of the vehicle. To do this well go ahead and remove the two carpet fasteners, fold the carpet out of the way. Then well start by using a small pilot bit and enlarging it to the side of the grommet necessary to install it. Now with the hole drilled out large enough well go ahead and install our grommet. The grommet well be using will be part number SWC8057. Next well go ahead and take a paint marker and mark the grey duplex cable where it will need to be trimmed so that we can feed the white wire into the cabin of the vehicle and the black wire will continue to route to the top of the engine and over toward the battery. Now with our mark made well go ahead and route the grey duplex able over to the battery. This will allow me to make another mark and trim off any excess that wont be used at this time. Now with our excess cut off were going to go ahead and get back underneath the vehicle, pull the grey duplex cable down underneath the vehicle and start cutting the sheathing so that we can strip it back and remove it. Now with that done well go ahead and feed the wires back up to the top of the engine compartment where we can gain access. Next well take our pull wire, feed it through the grommet and up to the top of the engine. Well attach the white wire so that it runs back to our seven pole and pull it into the cabin of the vehicle. Now Ill go ahead and take a black zip tie and secure the black power wire to the manufacturers wiring to hold it in place at this time. Now well go ahead and set our wires aside as well take the brake controller and holder, or pocket, and install it under the dash of the vehicle. Well use the screws provided with the brake controller kit to install it. Now with the pocket secured we can go ahead and set our brake controller into position. Next well go ahead and take our pull wire, feed it back into the engine compartment so that we can attach the remaining black wire from our grey duplex cable and pull it into the engine compartment to feed power to our brake controller. With the power wire for our brake controller pulled into the cabin of the vehicle well go ahead and use our light tester to identify the correct wire for our brake signal coming from the brake switch. For this application coming from the brake switch will be the white wire. This will be attached to the red wire coming from the pig tail of our brake controller to send brake signal to the brake controller. Next well take the pig tail provided with our install kit and plug it into the back of the brake controller and start routing our wires. Well first take the white wire and route it over to the kick panel on the drivers side where we have a manufacturers ground. First well cut off the excess wire, strip it back and add a ring terminal. Then we can remove the nut from the ground stud, install the ring terminal and resecure it. Then well take the red wire from our brake controller pig tail and route it up to the white wire we identified as the signal for the brake controller switch. Well slide on the quick connector and then slip in the red wire and secure it, closing the clasp on quick connector. Next well take the two wires we fed through the fire wall, the white wire from our seven pole connector and the black wire we ran for power for our brake controller and cut of any excess, strip them back and add the yellow butt connector provided with our ETBC7 install kit. Then well take the black wire from the brake controller which will be our power, and the blue wire from the brake controller which will be the brake signal going to our seven pole connector and secure it with the yellow butt connector also. Now with all our connections made I recommend you take some black electrical tape and wrap up the wires. Well wrap up the pig tail coming out of the brake controller so it goes up underneath the dash, and then our yellow butt connector connection points. Now with all our wires taped up were ready to take some of the black zip ties provided with our install kit and secure the wiring up underneath the dash. Next well move to the engine compartment. Here well take the black wire we ran into the cabin of the vehicle for the brake controller power and follow the grey duplex cable black wire from the seven pole connector over to the passengers side, following the manufacturers wiring. Now that were over here on the passengers side with our power wires we need to mount the breakers provided with our install kit. Well use a 40-amp breaker for the seven pole connector and a 20-amp breaker for our brake controller for this application. To secure the breakers to the inner fender well here next to the battery well using the self-capping screws provided with our install kit. Next we can go ahead and take our power wire, trim off the excess, strip it back and add a ring terminal and attach it to the breaker. Well be attaching to the silver post on the breaker side as the hot lead will go from the copper side of the breaker to the battery. Now with both power wires attached to the silver side of the breaker well take the leftover pieces of our power wire, attach a ring terminal to one side, and route it over to the positive battery post on the other side. Here we can cut off the excess, strip it back and add a ring terminal. Next well go ahead and add the nuts to the ring terminals of the breaker and secure them by tightening them down. With all our breaker attachment points secured well route the power wire over to the positive battery terminal and remove the positive battery terminal post nut, slide on the ring terminals and then secure our hot leads with the nut. Then well go ahead and take a couple more zip ties to secure our wire, once again, trimming off the excess from the zip tie to clean up our install look. This will complete the install of the Contra Prodigy P2 brake controller, part number 90885 along with the seven pole install kit, part number ETBC7 on our 2013 Jeep Wrangler Unlimited.


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