bing tracking image

Blue Ox Tow Bar Wiring Kit Installation - 2019 Mini Cooper

content loading

Products Featured in this Video



How to Install the Blue Ox Tow Bar Wiring Kit on a 2019 Mini Cooper


Hi there mini owners. Fitting your 2019 mini Cooper S we're gonna be taking a look at and showing you how to install Blue Ox's style wiring kit. Our blue ox wiring kit will take all the lighting signals from your motor home and transfer them to the lights here at the back of your vehicle. This will allow people behind you to know your intentions when going down the road. And the purpose of the diodes is to allow those signals to route here, to our light, to illuminate the light, but it acts as a one way check valve that prevents that current that's flowing from the motor home, from back feeding into the circuitry on our vehicle and causing any damage to it. This is my favorite option for setting up a flat toe is to use a diode setup.

This way all of your components are permanently mounted inside the vehicle everything's hidden inside the vehicle. So you'll never really even know that it's there and you get a connector at the front that, you can just simply plug into to quickly hook up your motor home. There are some other options out there to get lights here at the back of your vehicle, just like this, but some of those other options to me, they're more work. And I don't like the way, how they last in comparison. You have your bulb and socket kit, which nowadays often doesn't even work in many of the modern taillight assemblies due to them being L-E-D.

There's just not room in there to add an additional bulb. You also have to drill a hole into your taillight assembly to add that bulb. And that's just, to me, a location for future leaks. So I really like the diodes. It keeps your housing nice and safe.

You're just tapping into the wiring. Now, some people like the bulb in socket, because they don't have to touch the wiring. So it helps prevent any kind of warranty issue with wiring related concerns. But again, you are likely gonna potentially damage your housing doing that. So I don't really prefer that one.

The other option is magnetic lights. In which case you would pull those out and they would just kind of magnet to the roof or the side of your vehicle, wherever you have a magnetic surface, you run the cable up to the front, to plug into your motor home. And those are great for if you got multiple vehicles so that you can just move it around. Or if it's just like a temporary thing, maybe you're just renting or borrowing 'em from somebody you need to for a quick trip, those work out really well. But if you do this all the time, every single time you wanna hook up and unhook up, you have to pull those out and route that wire and then bundle it all back up. It becomes more work in the long run rather than just installing these right out the gate. Now blues work very similar to road masters. In my opinion, I personally like road masters over blue ox because they come with a nice heat sink on 'em to help dissipate heat to ensure that those diodes don't over heat, but we haven't had any issues with the blue Ox here. So they seem to work just as well. But if I had an option, I would probably go with the roadmaster. We'll begin our installation here at the back of the vehicle. We've got the lift gate open and you can see inside the back here we'll access the rear of our taillights by removing the cover access cover is located right there. It's gonna be the same on the opposite side. So pull it. It just pulls right off of there. So just pull that out of there. That'll allow you to access the wiring for your taillight assembly. Now you're not gonna be able to see it in here. You'll have to feel for it, but there is a connector on the backside of our light assembly. You're just gonna reach your hand in there. You're gonna have to reach around, press in on the release tab, located right there and then just pull it out. It's pretty much in back. It's about right there. So that's where you need the angle you need to go to get to it you'll know you got the right connector. If it's a six pin connector, there may only be five wires in your connector though, depending on the options you have, ours only has five, but it is possible depending on options to have six. So, but the connector will look the same regardless. You'll see here that one of our pins just is empty and yours may be the same way. The empty pin is pin number one there's numbers written on the back of the connector. So you could identify which pin number they are. The pins we are concerned with are pins five and six. Those are gonna be our stop turn and our taillight circuits. So we're going to take some of this fabric here. That's on our lights and kind of just on our wiring here and just kind of peel it off. Once we get a little bit peeled back there, you can just. Cut it. And then you can peel it off enough to allow you to be able to work On the wiring here. So we're just getting some of that out of the way. All right. That's side of the way, the little piece that's up here. You can leave this here it's fine. It's actually a good spot to let you know, you probably don't want to cut any closer than that. Anyway, So pins five and six are the ones we're concerned with. So on the driver's side here, pin five is gonna be this gray one with the violet stripe and pin six is going to be the black one with the yellow wire. So we're gonna take the black and yellow, the gray and violet separate those from the rest. Once we've got them separated, we're just gonna cut both of those circuits. Once you've got both of the circuits cut, you're gonna strip back each end of the wires that you had just cut. All right, now we've got all the wires cut. These are the diodes that come in your kit. And these are the spade terminals that will connect to the diode. We're gonna use these spade terminals on our wires here. So each one of these wires that we just cut and stripped, I like to twist them first just to prevent stray strands from not going into the terminal, helps all the strands slide in easier. And then each and every one of these wires that we just cut here and stripped is going to get one of those blue spade terminals attached to it. You got them all twisted spade terminal there, slide it over the wire and crimp it down. And, just rinse and repeat. All right, we've got our last one here. Get it crimped into place. And there it is. We'll now just take our diodes and plug 'em in the out is always gonna go towards the connector side. So we'll plug in the single pin because the single side's always the outside, the inside is a dual. We're just gonna plug our wire back in there. So matching the colors up. So the grain violet here is on each side of the diode or other diode. Our other diode we're gonna plug in the same way. And of course this one's gonna get a wire on each side of matching color. All right. So now that we've got our connections made there, we now need to start hooking up the wiring that comes in our kit to it. So you can see we've got this four flat here. You do get some additional wire to make a jump across the other side, but honestly we should have plenty here in this bundle to where we shouldn't even really need this. If I need it, we'll use it. But otherwise we're gonna set that aside. So we'll just get this undone and we're gonna take each of these wires here that are together and we're going to separate those. So, we've got white, brown, yellow, and green. We're gonna separate each one. I often use a part of the white wire here to make my jumper from one side to the other, for the taillight circuit. We do get additional wire with this. So we might as well use it. But you do get plenty in just this harness to where you could use that. Because you might want to use that other wire over there for some other component in your flat toe setup. So it could be, could be worth saving. So we're gonna separate all those out the green one that's for the passenger side. So we're gonna pull that one off a little bit further, because we're not gonna use it until we get over there. But our yellow, brown and white really again, the white, we don't even really need right now either. This is our ground circuit. We can get a ground anywhere we want. So that's why normally I use the white as part of a jumper cause we can ground it at any point. We can go ahead and hook up the ground, while we're back here. We'll take a look and see what it's like. I may end up opting to put the ground in a different location than inside here. We'll just have to see, I actually think the passenger side's probably gonna be the most ideal place for me to place my ground circuit. So we'll probably peel that back and we're probably gonna throw it over there. So the main focus here is the yellow and the brown. The yellow circuit is our stop and turn circuit for the driver's side of the left side. And the brown wire is the taillight circuit on our wiring over here, pin five is going to be our taillight circuit and pin six is our stop turn circuit. So pin five is the gray violet that's tail and black in yellow is gonna be stop turn. So now that we know what those are for, we can strip these back. Now, the yellow one, just gonna get a spade terminal. Slide that guy on there and crimp it down. Our brown circuit here For the taillights. When we turn the taillights on we want both the driver and passenger side taillight to illuminate. So those actually need to be connected together. So they both operate off the same circuit. So this is where a lot of times I use some of the white wire to make my jumper. But since we do have color matched wire here, we might as well use the color match. It could be useful for down the road. If you forget what you did, you know, five, ten years down the road, then you got an issue. You gotta potentially resolve having the wire colors match can make it a little easier, especially if you're not the one working on it. If you send it to a shop, the color coating can help them out as well. So we'll go ahead and use some of the brown. We're gonna strip it back and now we're gonna attach this brown to the other brown off of our main harness. Just twist those together, and then take one of your spade terminals and slide it on there. You might have to twist the spade terminal a little bit to get it to slide on there since it's twice as thick. Now that we've put two wires together, and that'll just crimp on there. All right, now we can just plug these in. So pin five, gray and violet was the taillight circuit. So we only got one pin left on this diode. Brown wire's gonna plug into that, on our pin six the black and yellow, it's our stop turn for the left side. It's gonna get our yellow wire that plugs into the only remaining pin. All right. So that's pretty much it for the driver's side. We're gonna be doing basically the exact same thing over on the passenger side. We can plug this connector back in have to feel around for the slot and plug it in flip it over if it doesn't go in easily, cause you probably got it backwards. There we go and that plugs in. Now to get our wire over to the passenger side we're actually gonna just go underneath this flooring here. So just move some stuff outta the way and we'll lift up on that. There's actually another flooring below this. Just pick up that other flooring and set that outta the way as well. And this way our wire, we can kind of poke it down and come out of the carpet there. I'm gonna use a piece of fish wire to help you do that. So now we can take our wiring. I went ahead and pass the fish wire down. I just pushed it down and pulled it out here on the bottom. This way we can attach our wiring to it, to pull it through. So we're just gonna take the end of our wire here. We got our four flat end. Don't forget your brown wire. You're gonna need that. We're gonna be running that through. So grab the other end of the brown wire. And now since we want the white and the green wire to go to the other side. Just peel it on back. That looks like that's probably long enough to get over there. If we need to peel back more wire later, we can peel back more later. So also take that green and white wire, all those, we'll use some electrical tape now to attach it to the fish wire that we ran. And I like to make sure I tape it all the way up across the top. That way none of those wires that are there get caught on anything as you're trying to pull it through, kind of makes a nice little taper. And then we're just gonna pull our fish wire until it comes through. You might have to kind of assist feeding it a little bit. There we go, got that through. We're gonna go ahead and undo our tape and then get all the wires kind of pulled through. I recommend starting with your main four flat one. And then pulling the other ones after that. Save your fish wire, because we're gonna need it again over here on the other side to pull wires up behind the assembly over there. All right. So we've got it all pulled through. Here's the big bundle of the four wires that are together. You can see we got our white and our green that are branching off of those. We did stretch them out just a little bit further. And then we've got our single brown that we had added to the other brown one to make our jumper to this side. So these three wires need to go across behind the assembly so we can get all the necessary signals back there. So we're gonna take these, your brown's probably quite a bit longer. It's okay. Found it easier when you pull them through. If you keep the ends close together like that, I already fed this one. Just drop it down and pull it out of there. And then we can attach these wires to it. And, give that a little pull. We can bring all those up again. We're gonna separate it from here and then pull up any kind of slack. We got primarily with our brown wire there. I'm sure we're gonna have quite a bit of slack. All right. So over here on the passenger side, we got the wires pulled up here. I'm gonna ahead and put the cover back down. So I got some place to hold my tools. We went ahead and wired in the diodes. It's basically exactly the same on this side. You want pins five and six and again, they are labeled the color does change. Six is still gonna be black with a yellow Stripe, but pin five is gonna change to gray with the yellow Stripe, but it's still the same pin numbers, just different colors over here. So we cut 'em and installed it the exact same way we got that all hooked up. We're ready to roll. Now we're gonna take our green and our brown wire here and get those hooked up. So we got quite a bit of excess here on the green that we don't need. So I do like to leave quite still a good amount just so we can easily pull these things out and stuff like that and access them. So I'm thinking something like that's probably a pretty good amount. And then we're just gonna match that with our brown. Well then strip back both of these and put a blue spade terminal on these. All Right, so we're good to go there. We know that pin six is the stop turn black and yellow. So we'll plug our green in there cause it's passenger side, stop turn. And we know pin five is our tail lights, gray and yellow. So our brown wire here plugs into that one. All right, we got those connections made. We can plug this connector back in. All right Now our yeah our white wire here just needs to get ground. We're actually gonna get ground right here from this module. I've already tested that's a nice good ground. I was using it to test the lights, they all worked out great. So that's a nice little screw head right there that we can utilize. We'll just pop that off of a 10 millimeter socket or wrench here. All right So we got the nut off of there. We're just gonna trim this to length again. I like to leave a little excess. That's probably pretty good. Strip back our wire here. Once we've got that stripped, we're gonna put the ring terminal on it that comes in your kit slide right on there. And then you can crimp that down. Then we'll just slide it onto the stud, and reinstall our nut. All right That's a nice solid ground for us. Everything should be good to go there at this point. We're gonna take the remaining wire that we've got that's underneath our panel here and we're gonna route that to the front of the vehicle. So we can go into our six-way connector that we're gonna be mounting up there at the front. So there's a grommet located right here. That's where we're gonna be pushing our wires out of. I'm also gonna take these wires that are running across just to hide them. So I'm just kind of poke it underneath that panel there, that'll kind of hide the everything that's running across from side to side. So we're gonna use a 9 16 drill bit to drill out the hole in the grommet. all right now we've got that drilled out. You won't be able to see all the way to the ground, because there is like an under shield under there, but we can still poke our wire down through the hole. You don't have to poke it all in. Just poke enough to where, when we head underneath to pull that shield off, we can grab our wire and pull the rest through. Well you could feed all through now. It's all up to you and we're just gonna fill this up with silicone now and put it on both sides and that'll see all that up. Now we'll head down below. All right. So we're now underneath and your wiring's gonna be located underneath this panel right here that we, where we just poked down through the ground. So we'll have to pull this panel down. There's two fasteners here at the back. We'll use an 8 millimeter socket to remove these two. I'm gonna switch over to a 10 millimeter socket and you're likely gonna need an extension as well. because the other ones are gonna be located around the sides pretty much at the corners and these are gonna be at plastic nut. And, those will just zip right off of there. Sometimes these plastic nuts, don't like to come off when you're pulling them down. So sometimes you gotta pull down on the panel just a little bit to give it a little pressure behind it, to guide it off. And the other one I see is over here on this side. So it looks like there was three plastic nuts and two bolts at the back that looks like that was everything. So this should pull down now. Now I have to flex it in a little bit to get it by those pieces. And there's our box of wire right there. So we'll reinstall this. After we get our wire routed at this point, I'm gonna route the wire up to the front of the vehicle and then I'll show you the path I took to get it there. So here we are underneath, there's our wiring. I already routed it. And after I routed it, I did come back and double up on the silicone there to make sure we don't have any leaks. From there we just go forward factory wiring there. So we wanna try to always go near the factory wiring cause we know it's already routed in a way it's gonna avoid the moving components like our suspension here and anything excessively hot, like our exhaust. So we go up by that wiring, attach it to that wiring, go across the brace. That's here or the steering stabilizer. I mean the sway bar is just kind of go across the top of all that. From there it does kind of come down the side of the fuel tank and we do just kind of stay underneath the fuel tank heading forward. This is a vacuum line that we attached it to here. I recommend that over the fuel line. So we did the vacuuming line and then we just kinda stay above the covering here, going all the way forward. I just poked it in here and just kind of poked it. You know, just pulled it out of this point. Then I moved on to the next one, pulled it out of there. Just kind of moved on, pulling it. If you need to remove a bolt along the way you can. These are all 8 millimeter sockets to remove them. This one I know I did after remove this one right here so we could, so I could poke it above this brace. I just put that back in. From there we go underneath the sway bar and the rack and pinion for the steering gear. We just go underneath that you can actually poke it right underneath. We come out here the cable tie it across the brace, run along the bottom here, just head right underneath, poked it through there, went up, attached it to the base plate and then ran it across to where we're gonna eventually put our six-way wiring. Now at this point, I'd recommend that you hold off on finishing up your install here. You might notice that our face is gone because we just put the base plate on. That's the best time to do the rest of your Flat toe stuff is when you got that FAIA off. So we're doing our diode wiring now, but before we put our six-way connector on, we're gonna want to finish all this, the rest of our components up so we can get our face back on. So we know what we'll need to cut out in order to install that. So we're gonna come back to install our six pole up here once we get the FAIA back on. So here we are, we got our FAIA back installed. Let's hold our wiring through. So now we gotta finish up getting this all connected to our six-way connector here. So I, we got some excess here that we can trim off. We don't need to have this much. I always like to leave just a little bit though, to make things easier to work with. So we'll trim it off to maybe about here and that additional red wire that you see there is for a battery charge line kit. We're gonna hook that up today as well, but that does not come included in your diode wiring. It's an additional accessory that you can get here at trailer to trickle charge your battery when you hooked up to your motor home. So you can guarantee it'll start when you get to your destination. So kind of like what we did at the back, we are gonna trim between each one of these so we can separate each one of those out and then we're gonna strip back every one of those wires. I also took on my six way connector, we're gonna be mounting here. There's a rubber dust boot that's on it. I slid that over as well. Cause you got, you gotta hook your wires up and don't have that on there. You'll have to disconnect your wires to slide it over. Them so don't forget to slide that on first. All right So now we got, them all stripped. We need to hook them up to the back of our switch here. Each of these is gonna have a little set screw. That's gonna hold it in place. I like to start with the ground circuit and each one is gonna have a little label on it. A couple of letters. So GD is ground that's right there. That's where we're gonna start. So we're gonna unscrew that because we need hooked up ground in our system, which is actually the white wire that we had stripped back down there. So it's for our white wire, which is gonna move our way around. Now next is LT, That's left turn, We're gonna use that. That's our yellow wire. Next is RT, That's right turn, we're gonna use that as our green circuit. Next is S we're actually gonna skip that. We won't utilize that one. After that one, we have TM, which is for our taillight circuit. That's our brown wire and we're gonna use that one. And then if you are installing a charge line kit, we would want to hook that up as well. We're gonna hook that to our center pin. So now we've got all of the circuits exposed. We're just gonna go back to ground. Cause I always like to start with that one. So we'll just switch it around til it's we see the GD and then we're poking our white wire into there and then we'll tighten down our set screw, make sure that you're don't have any stray strands out. All the strands are down in the hole. And then you also wanna make sure that your set screw that you're tightening down is tightening onto the wires and not onto the sheathing around the wire. All right. So we've got that in there and I'm just gonna kinda just move it in the circle. So next was LT, left turn. That's gonna be our yellow circuit hook that one in there. Next to his RT, It's right turn, So's our green circuit. And then that's, that's gonna be our brown, but it's harder to get to the center pin. So we're gonna put the center pin in first, before we do the brown. So if you did have a charge line, this is where it would go. And then lastly, we'll poke in our ground wire. I mean our taillight wire into the one labeled TM and it looks like we dropped the screw. So we're gonna have to grab the screw off the floor there and screw it back in. But then we'll be right back here with you. All right, then we're gonna grab some dielectric grease and we're just gonna be real aggressive with it, fully coat up all the way around. We wanna make sure we seal all that up. We don't want any dirt, debris, or moisture getting in there. And now we can take our dust boot here, slide that back down over our circuits. And then I like to take some electrical tape and put it around my dust boot to help ensure the dust boot doesn't slide off of there. So now we'll just take our switch line up our self tappers. Those came with our base plate and they're gonna run right into the attachment on our base plate, use an 8 millimeter to tighten them down. Now that we've got our connector all hooked up, we just plugged it into the back of our motor home here. And we wanna verify that all the lighting signals work properly. I am gonna turn the motor home on just so we can ensure all the lighting signals are gonna function. So I'm gonna turn my taillights on there. You should see our taillights left turn signal with all of our signals working properly. We're ready to hook up to our motor home, put it into flat zone at the road. And that completes our installation of Blue Ox's dialed wiring kit on our 2019 mini Cooper S..


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Kathleen M
Video Edited:
Kathleen M
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video by:
Chris R
Employee Zach D
Video by:
Zach D
Employee Jonathan Y
Video by:
Jonathan Y
Employee Jacob H
Video by:
Jacob H
Employee Randy B
Test Fit:
Randy B
Employee Andrew S
Test Fit:
Andrew S
Employee Brent H
Test Fit:
Brent H
Employee Shane H
Test Fit:
Shane H
Employee David F
Test Fit:
David F
Employee Ryan G
Test Fit:
Ryan G
Employee Clayton O
Test Fit:
Clayton O

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.