Today on this 2007 Mercury Mariner were going to install the Tekonsha Prodigy P2 Brake Controller, part number 90885. To wire up this brake controller, we will also be installing the etbc7 kit. Alright to get started were going to take our bracket and a bolt to the hitch, and the bracket that will hold our 7 pole connector and screw them together. This is approximately where we are going to mount our bracket. Go ahead and take some clippers and cut off these zip ties to free up the wiring so it is not in our way. Now we can go ahead and take our band clamp and attach our bracket to the hitch.
Alright once weve got it tightened down, Im just going to take a pair of tin snips and cut off the extra of the clamp. Now we can go ahead and mount our new 7 pole and 4 pole connector on our bracket. There are a total of 4 fasteners that will attach our new 7 pole and 4 pole connectors to our bracket. With everything tightened down we can now go ahead and make our connections. Take our new 3 pole connector off the 7 pole, and plug it directly in with the 4 pole on our vehicle.
The purple wire is actually a reverse lead hookup. We will not be using this for this application. We will go ahead and roll it up and tape it off, get it out of our way. Then you have a white wire with a ring terminal already attached, this is our ground wire, go ahead and run it over here to the frame, and you will look for a civil place to make your ground connection. Weve got one here at the bottom of the frame next to the hitch.
I will use a self tappening screw to attach it to the frame. Alright with my connection made there, we can now move on, weve got a black wire with a yellow butt connector and a blue wire with a yellow butt connector. The black wire is going to be a positive battery feed; the blue wire is going to be a direct feed coming off the brake controller. This is your signal wire that will go to the trailer. Ive already gone and run our gray duplex cable, this cable is going to start at the back and lead to the front at the engine compartment, so now what I am going to do is strip these wires back so I can make the connection with our new black and blue wire off the 7 pole.
My connection points will be black to black through the yellow butt connector. The blue wire coming out of our 7 pole connected with the white wire from our gray duplex wire. Okay now weve made all of our connections, were going to go ahead and use some black tape, tape up the connections and try and bundle up our wire a little bit. Next we are going to install our brake controller, but before we can install a brake controller we need to mount a bracket. We are going to go with the pocket style here on the dash. I will be using two screws that come with the installation kit to install it. Now before I drop my brake controller down in there permanently, we are going to want to wire it up. To do this take the pig tale that comes in our install kit. The black one is going to go to power, the blue one will be our brake signal to the back of our connector, the red one will be to the brake signal from the vehicle, and the white will be our ground. Lets go ahead and get that started. The first wire we will run to the cab of the vehicle will be the white wire from our duplex cable. Well peel back the sheath and split the wires up. Next we will rout the white wire through the grommet here and pull them into the cab. Before we route our black wire to the cab we will need to mount the 40 amp breaker which will be for our simple power wire, and then a 30 amp breaker for our brake controller. This spot here in the engine compartment should do just fine. Okay weve got our 40 amp breaker set up for our power supply to the 7 pole connector in the back, now I am going to go ahead and mount the 30 amp breaker for our power supply for our brake controller. Our black wire that comes out of our duplex, I am going to run it here to our 40 amp breaker. I am going to go ahead and cut off the extra wire and add a ring terminal so that we can connect it. You will notice that there are two different colored posts on your breaker. The copper post will be the one that goes directly to the battery. Now what I am going to do is go ahead and make a lead up that goes off my 30 amp breaker inside to the brake controller. Now I will take the other end of the wire and feed it inside through the same grommet we sent the white wire through. Now that we have our wires inside of the vehicle, we can go ahead and cut off the access. For my brake control signal, my power, and my ground Im going to go ahead and add my butt connectors now. Now lets go ahead and strip back the two wires that have already run through the firewall. Our white wire that came from the duplex wire that runs all the way back to our 7 pole, and well make a connection. The black wire is our power wire, goes to our breaker, and then from the breaker to the battery, and now we have two more connections to make inside here. We are going to take a piece of the white wire left over from our duplex wire that we cut off, strip it back and run it outside to the battery for our ground. The other end of our white wire pushes through the same grommet that we used previously, and then our brake signal we will be using a quick connector to make that attachment. We will be getting our brake signal off the brake switch. For this application this is a solid green wire coming off the brake switch. With all my connections made into the cabin of the vehicle, we can now go ahead and run our plug into the brake controller, make that connection, and then we will start cleaning up our wires. As you can see you need to take the brake controller out of the holder in order to make a good connection. I will slip it back in. Before I zip tie my wires back up, Im going to take some black tape and just clean up the look a little bit. So now Im routing my ground wire over to the battery. Ive got the length I need, Im going to go ahead and cut it off and add a ring terminal so we can go ahead and add it to the battery post. We need to make two power wires that come from our breakers directly to the positive battery post. Ive got my left over piece of wire from our duplex, Im going to go ahead and put a ring terminal on it now, and run it to the battery. Following the same route that we did earlier we will take it over to the positive battery post, use my cutters to cut off the extra, and then add a ring terminal. That was from our battery supply to our 7 pole connector, now we need to make up a lead for the battery supply for our brake controller. Now before I cut this one off, so that I can get them as close to the same length as possible I am going to go ahead and start securing my wires with zip ties. Alright before I attach my power wires, Im going to go ahead and go back and clip off all the extras from the zip ties, now that we have our length we will go ahead and make our battery connections all at one time. This is a top post mounted battery that has a screw long enough, that we can add our ring terminals to it along with a nut to secure them. Weve got one more battery connection to make our ground wire. Slide it on, thread on our nut, and we can go ahead and tighten it down. We will go ahead and give our breakers a quick tug just to make sure they are tight. With our wires, our brake controller in place, and our 7 pole connector mounted that completes the install for our Tekonsa Prodigy P2 Brake Controller part number 90885, our etbc7 kit, and the Tow Ready mounting bracket part number 118136. .