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This junction box provides a quick and easy way for you to connect the trailer plug to the trailer wiring. The box also makes your trailer connector simple to replace.
Features:
Specs:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today in our Utility Trailer, we'll be installing the Pollak 10-Terminal Junction Box, part number PK52248. Underneath our trailer here, we need to choose a location to mount our junction box. I'm going to go ahead and mount it just in this area right here. I'm only going to be using the top 2 holes, one on each side, to secure the box to the trailer. As you can see, the bottom hangs down past this particular trailer. We can also kind of go over the wires we're using. This trailer's already got the brake wires run, as well as the 4 flat wires run, the running lights and turn and brake signals. We'll go ahead and remove the cover. We got our location.
We'll then go ahead and take our paint marker here, mark the 2 areas that we'll need to drill a hole. Now that we have our 2 locations marked, we'll go ahead and drill them out. Now that we've got our 2 holes drilled, we can go ahead and mount our box here to the underside of the trailer. To mount our box, we're just using a screw and a nut on the backside to secure it to the frame. Now that we have the box nice and secured to the trailer, we can go ahead and begin the wiring process. Now that we've trimmed our wires down to length, go ahead and strip our break wire, take the jacketed part off of the top. Go ahead and remove the jacketed portion on our brake wire to expose our braking ground wire. I'll go ahead and take one of our open-hole grommets. We'll slide our wires through here.
We're going to use one of the solid ones down here on the bottom, but I'm just going to put a little slit in it so that stays tight up against these wires. On this particular junction box, it's not labeled which post does what. We can kind of choose however we want to attach the wires into which post. Both of these brown wires here are the running lights on the trailer. We're going to go ahead and twist them together and just use one ring terminal on it. We'll go ahead and put our ring terminal in place and we'll crimp it down. We'll go ahead and add it in line like that. Next, we'll go ahead and take our yellow wire, which is the driver's side or the left side brake and turn signal. We'll go ahead and add it in line like that. Next, we'll go ahead to the green wire, which is the passenger side brake and turn signal.
Next, we'll go ahead and add our brake line in, or the wire that will run back to the power brakes. This is the hot side or the side that will give power back to the brakes. To make things a little bit easier, we're going to space out the wires a little bit. We're going to go ahead and skip these 2 terminals. Go ahead and cut our ground wire down for the brakes. Next, we're going to need to go ahead and add a ground wire that will connect the trailer frame to the ground plug or the ground stud here on the junction box. We're going to go ahead and feed an extra ground wire in this opening right here that we ran our brake lines in.
Strip some wire back and we'll put another ring terminal on this end. We'll go ahead and add it in line like that. We're going to need to drill another hole here in the frame so that we can add a ring terminal to the end of this white wire, which is the ground wire, and attach it to the frame. Now that we've got our hole drilled here for the ground, go ahead and add a little bit larger ring terminal in place. Again, we'll just secure it to the frame using a nut and a bolt. Next we're ready to start wiring in our jacketed 7-wire. The jacketed 7-way wire that we'll be tying in with our junction box today is part number DW04914-1. Again, we'll take one of the round-hole rubber plugs here, put in the wire, and slide it into position. We're going to go ahead and add a zip tie right here around this wire to keep it from pulling out of the rubber grommet. We'll go ahead and take the brown wire off of this jacketed 7-wire, go ahead and strip some wire back and add a ring terminal in. We'll go ahead and put it on the stud that already has the brown wires, because this is the running light circuit. Once that's in place, we can go ahead and take one of the little locking nuts and tighten it down on the stud. Next, we're going to go ahead and take our yellow wire here, add a ring terminal to it. We'll be adding this in with the yellow wire, which would be the left turn and brake signal. Get that in place so we can go ahead and put a nut on there as well. Next, we'll take the green wire, which would be for the right brake and turn. We can go ahead and add it in with the other green wire. We'll go ahead and put a nut on that one as well. The next wire we'll be using is the blue wire, which would be for the break signal. We'll be tying that in with the wire that already has the black wire to it. Go ahead and take the white wire here coming from our jacketed 7-wire. Strip some wire back, add a ring terminal. We'll tie that in with the ground wires, which are the other 2 white wires already on the stud. Next, we're going to go ahead and connect the red wire, which could be used as a reverse light wire, but we're not going to hook anything up to the other side of it but we'll go ahead and connect it to one of our studs here. Finally, we'll take our black wire here, which will make it the 12-volt top on this jacketed 7-way. Go ahead and connect the black wire here to the other open stud, and nothing else to be connected to it for now. We'll go ahead and add a nut on each of these remaining studs for future use. Now that we have all of our wiring connections made, all that's left to do is put the cover on, and install the 4 bolts. That will do it for the installation of the Pollak 10-Terminal Junction Box, part number PK52248 on our utility trailer.
Average Customer Rating: 4.7 out of 5 stars (101 Customer Reviews)
This junction box provides a quick and easy way for you to connect the trailer plug to the trailer wiring. The box also makes your trailer connector simple to replace.Good product for what it does. Wish it was a little thicker. Makes a clean wiring job possible. Mounted mine inside a tool box along with the brake emergency battery. Did away with the "boat trailer" wiring the manufacturer had installed.
ARIC - 11/22/2017Had to replace the cable connecting my Springdale travel trailer to the tow vehicle. I ordered the etrailer 50-67-005 cable and the PK52248 junction box. The original cable was terminated in a standard electrical box with all of the connections done with wire nuts. When I opened the electrical box and pulled the wires out to have a look-see, one of the white ground wires came out of the wire nut. This is not the first time I have had a "loose wire nut" problem with this travel trailed so I decided the new cable would be differently. The j box was mounted to a 2 X 6 steel tube so I used 1/4 inch self drilling screws to mount it. I also used 1/4 in. self drilling screws to mount the metal cable clamps to hold the cables, going into the box. I used a couple of pieces of 3m mounting tape on the back of the j box to hold it in place to the frame while installing the mounting screws. I also made a small label to go in the lid of the j box to show wire colors and function. There was going to be five ground wires connected so I made a small bridge out of 1/2 in X .062 brass to go on the two end posts. I think this made a cleaner installation. When everything was wired and checked out I sealed the open grommets with RTV. The intermittent problems with the cable are now fixed.
Very robust built junction box. Thanks Etrailer
Over the years I have installed 10 or more of the ten pin connection boxes on other people’s trailers. This time it was on my 5th wheel. It is a great box and makes for a much nicer fix in the future. I also had to replace the 7 wire pig tail because the plug was pulled off. I bought the 6ft. Coiled cable. I used a 1/2 inch clamp to hold the cable at the box and a Connect-to-Protect to keep the cable up out of the weather. The products are great and look great too. Thank you, Philip
Very good product that made wiring my home made utility trailer easy. The box has plenty of room for your wires and long studs for those connections that need many wires, like the ground. There was also enough room above the studs for me to mount the Tow Ready 118158 converter to the cover and keep it protected. The 3 extra studs worked out perfectly to hook up the converter as well. Only thing that would make this better is if it included more solid grommets so you could make smaller holes in some or plug more of the openings, but some silicone sealant will fix this. I did most the wiring before mounting to the trailer, only had to connect the blue brake wires after mounting.
Quick delivery and exactly what I neede d.
Great box for making all the connections for the plug harness, trailer brakes, and the brake battery and safety switch. etrailer has all the parts needed to rewire a trailer from plug to lights!!!
John - 08/09/2020This was exactly the item I needed to make connections between trailer wiring, brake system and connector cable. Simplified maintenance and easy modification were my goals. Succeeded!
I recommend this Great Product, very Versatile, open Architecture, Solid Construction!
Al W - 05/09/2020I liked this terminal box for managing wiring on the back end of my truck. The previous owner did a hack job on the wiring when they installed an aftermarket bumper and headache rack so I used this to correct the problems they introduced. I repaired the wiring harness and then used an inline 7 pole 5th wheel splitter to run all 7 connections to the junction box rather than have taps in each of the factory wires. This let me take off multiple lights from the junction box with clean and easily maintainable ring connectors on the ends. I was able to safely wire the aftermarket blinkers and backup lights through the junction box rather than taps to maintain the integrity of the factory wiring harness.
I used this when replacing my seven round trailer connector. The ten terminals are a good idea. My trailer has a power winch, electric brakes with breakaway switch, 12volt power for inside the trailer, back up lights, and of course the required lights. Having all the available terminals made for easy wiring and clarity in wire runs. Much better than having a mess of wires in the battery box. This should be standard on all trailers.
Etrailers catalogue provided a complete & accurate description of the 8 items purchased. Placing the order by phone was fast & efficient. Items arrived within 4 working days, no tax no shipping charge. Professional all around.
Pat M - 11/21/2017I have not installed yet, but it looks like to be a simple process. I like the set-up.
The box was well made. Wiring installation was clean and looked good. etrailer is a good source for parts.
Used this junction box to rebuild the wiring system on a new trailer. Have used this type before and was impressed with the quality and ease of use. Made the new wiring much more secure and protected.
One year later and it's working well.
This junction box will work great to clean up the wire routing I have on my trailer and make it easier in the future to trouble shoot problems.
Tommy F - 04/05/2019I saw this on the website and bought it as to me it makes wiring the trailer easier and makes it easier to test for problems when they occur. My ATV trailer wiring has to be replaced due to much salt from the road. This made the project a snap and the box is well made. Fast shipping too.
Works great, mounted on the inside of the frame, had plenty of room for my wires and makes installing the new lights and IV cable a breeze.
used this box to replace the old cracked one on my trailer and it does great.
My only problem is that the grommets provided are drilled out already, well two are solid ,but I have two holes now that need to be plugged to keep the weather out.....my suggestion is for pollack to include a few more solid grommets in the packaging.........other than that the terminals are solidly made and the box and hardware are all well made
I got this to replace a metal box that's actually supposed to be used in a house. The old box was corroded and rusty, and I wanted a better way to make connections and something that would be cleaner to work with. Clean was wishful thinking. While I appreciate that the box was taped shut to keep the extra parts in, the tape used was the worst stuff I've ever dealt with. There were many small pieces of tape that didn't come off, plus the adhesive left behind was a total mess. If not cleaned, it would have become a complete dirt ball in a matter of days on dusty roads. I soaked it for more than 2 hours with Goo Gone and still had to scrub and scrape. I got most of it, but there's still some that will be collecting dust. If Pollak would spend a penny or two more per unit on better tape, it would save their customers that aggravation. The other small issue is what's been mentioned before, not enough solid grommets. Like others, I'll also be stuck with having to close the extra space in some of the grommets with silicone. I just wish manufacturers would read feedback and make improvements.
I bought this box because It had 10 terminals,and extra space is a plus for future add on's. I also bought this one because it was more expensive and figured it would be better quality than the cheaper unit, but I feel that the plastic housing is flimsy and could break easily also there is no gasket on the cover to keep water out. It will get the job done but I not thrilled with it.
Ok junction box, does the job its intended for. Gave it four stars because it "feels" cheap. But it works great. I was just careful not to over torque the nuts on the studs because it "feels like" they will pull out if you over tighten the nuts. So be careful.
Makes wiring simple. Not Watertight. No gasket in the lid, and comes with only 2 solid gromets and 4 large hole gromets. I'm not running a 1/2" bundle of wires out of four places in the box so I have to silicon the holes shut. Not major but should have come with enough solid gromets to seal the box up.
Only reason ill give this product 4 stars instead of 5 is, just wish the case was a little bigger for the 20 wires. But what do you expect when you try to shove 20 wires in a box? ;) Product works great!
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