Wire your vehicle to tow a trailer with this universal, splice-in wiring kit. Includes 4-way flat connector and 48" of bonded wire. Designed for use with 2-wire electrical systems.
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today, on our 2006 Ford van, we'll be installing the Hopkins wiring harness, with four pole flat trailer connector. Part number HM48035. Now, our van is equipped with factory wiring, where you could plug in a plug that has a four pole on it, but it's only available through Ford. Instead of doing that, we're going to go ahead, cut the end of that connector off, and hard wire our four pole flat trailer connector. Since we're going into the factory wiring harness, it will be protected by the factory fuses. Not that you're underneath our van, we'll go just in front of our spare tire, up here on the frame rail. You see there will be four wires here and a plug that's just going in to a holder here on the frame. Pull and unplug that, and that'll be our four pole wiring.
You see that round connector, this is the factory plug. We're just going to go ahead and cut that off, and then splice into the wires. It will be color for color. Brown will be the running light circuit. The yellow will be the driver's side turn signal. The green will be the passenger side turn signal.
We're going to go ahead and ground our wire, right here, to our frame. There's already a ground here, so we'll just use that one. Go ahead and snip off the factory connector. Now we have access to our wires. It is always a good idea to go ahead and check these with a tester before hand, to make sure your factory wiring harness is working on your vehicle. Now, we'll go ahead and take our new wiring harness.
We're going to go ahead and peel back the wires from one another. Just peel it back a little bit. That'll just make it a lot easier to go ahead and strip them and add our butt connectors on. Now, these are all stripped back, I'm going to go ahead and crimp on some heat shrink butt connectors. Now that we have our butt connectors here on our new wiring harness, we'll go ahead and strip back the wires that are attached to the vehicle. Now go ahead and wire our new wiring harness into our factory wire.
Start here with the yellow wire, which will be our driver's side turn signal and brake signal, fit into our butt connector. Make sure it's crimped nice and good. Follow that up with the green wire. Next, we'll continue with our brown wire, then the black wire will go to the white wire. That'll be the ground for the circuit. Now that they're all crimped, we can go ahead and take our heat gun, and we'll go ahead and shrink the butt connectors, seal them up, then we'll wrap them up with electrical tape, just to give them another layer of protection. As you can see, we ran our four pole here to our hitch, so we have easy access to it when we go to hook up our trailers. Then we just zip tied it in a couple of spots, just to secure the wire. Trim the excess off the zip ties, and we can go ahead and test our new wiring. Go ahead and take our test light. Ground it here to the open stud on our four pole. Turn the running lights on, test the brown wire. Let's go ahead and cancel the signal light. Then we'll go ahead and turn our driver's side, or left turn signal on. Go ahead and turn the passenger side turn signal on. Then, we'll hit the brakes and we'll have a constant signal from the green and the yellow wire. Just like that, we're ready to hook up and hit the road. That'll do it for the install of the Hopkins wiring harness with four pole flat trailer connector. Part number HM48035, on our 2006 Ford van. .
Average Customer Rating: 5.0 out of 5 stars (39 Customer Reviews)
Wire your vehicle to tow a trailer with this universal, splice-in wiring kit. Includes 4-way flat connector and 48" of bonded wire. Designed for use with 2-wire electrical systems.Super simple to install and it followed the installation video exactly.
SMI Stay in Play Duo installation in 2015 Jeep Wrangler Unlimited –
Packaging was great with everything needed included plus extra items for various installation methods of you’re choosing. Upon initial investigation and survey, everything except the CD Information pack was accounted for.
No big deal, as I had previously watched 2 different Youtube installations found on the internet. In fact, the internet videos were what I used as my step by step installation process, and the written instructions were only used for concerns where the video may not have been as clear as I had hoped for.
Understanding that everyone has their own style and methods for doing this project, I purposely was not in a hurry to rush through it. All in all, I took @ 8 hours to install the Adapter 4 to 6 pole #30637, the EZMount Tow lights Kit, and the Stay in Play Duo Braking System.
I choose the EZMount because I didn’t want to mess around with the OEM taillights and wiring. Magnetic lights don’t work so well on composite tops and I didn’t want to stick them to the sides of te Jeep, so I modified the EZ mount to wrap around the thickness of the rear glass hatch on both sides. I added a 2”x 4” pc of Velcro on the inside of the glass hatch and the mating surface of the plastic light housing - to hold the lamps in place until the rear gate was closed.
I ran the wire harness on the inside under the trim all the way up to the front and through the grommet in the firewall. The flat 4 wire was routed and secured up to the Adapter 4 pole to 6 pole that I had fastened to the Blue Ox base plate.
The actual installation of the SMI unit and assorted parts went rather smoothly. Most difficult issue was the lack of working space in front of the driver’s seat area. Installing the screw that holds the G force controller on the front (the side towards the front of the car) was difficult as it was almost a blind installation due to lack of room. The nut and fender washer used through the fire wall for attaching the air cylinder cable bracket was a challenge to reach - tight fit with not much room for one's hand and arm.
Other than that, no big surprises – just a lot of tedious steps to do when you want to be sure that it is being installed properly – take your time and don’t be in a hurry.
Once everything was installed – it all worked when I checked the system out. The only thing that may seem a bit odd is that when setting the G force initially, the compressor will shut off while adjusting per instructions. To do this initial adjustment, the wife stepped on the brake in the Motorhome, with the switch “On”. The compressor starts, and the brake is pushed down by the Air Cylinder, at which time I slowly adjusted the G force until the compressor shuts off. I secured the adjusting bolt and I told the wife to take her foot off the brake and then re-apply them. The compressor did not start again and the air cylinder did not apply the brakes in the Jeep. After setting the G force per instructions, the unit didn't turn on when the brakes in the Motorhome were applied - but since we were not moving - all I can assume is that the brake system will function while slowing down once the accelerometer setting (the sensitivity setting on the G force box) has been met. I assume that the sensitivity setting method includes a way to ensure the Jeep brakes are not engaged too frequently and only until needed.
This is the only step that is a tad bit confusing without an explanation as to what to expect once the G force sensitivity is set.
Lastly, I checked the brake away switch and it turned the compressor on and applied the brakes as expected.
Overall - the installation went rather smoothly. Can't wait to see how the product works once we hit the road. I'll check back and provide an update later.
Not much to say but it works
The product will be replacing an existing pigtail that is showing signs of corrosion on the terminal ends and sometimes need a light wire brushing to make electrical contact. The terminals on this piece appear to be a better metal and time will tell if they resist the corrosion any better.
Glad they carry Hopkins products. I prefer Hopkins over others because the wiring plastic insulation is heavier. Excellent quality product.
Ordered this Hitch for a 1998 Ford F-150. It was ordered late Thursday night, and was setting on my front porch Monday morning. This is some of the fastest service I have experienced for a large item. My compliments to your shipping department.
The F-150 has a 17 inch spare so no need to drop it. the hitch went right up. Two men lying under the truck had it mounted, and torqued down in less than 30 minutes. Beautiful hitch, and really well made, and since I have built several Class IV hitches from scratch I know what I'm talking about.
Thanks etrailer.com
I bought wiring and connectors to rewire a 30+ year old utility trailer. All items purchased were of excellent quality and the trailer lights work well. I was especially pleased with the jacketed 4 conductor wiring.
I am very happy with Rebecca's help over the phone and assisting me with ordering my wiring harness with bracket on my 2015 Chevrolet Colorado. I received exactly what I need. Would recommend Etrailer to anyone. Thanks Rebecca and Etrailer
The customer service at etrailer is, as always, excellent. My product shipped quickly and arrived soon after I ordered. The videos and instructional material were very helpful in ensuring I was purchasing the correct product. For trailer or trailer related products I will not shop anywhere else. I needed this because my old harness had corroded terminals. This will be simple to replace.
Works fine
I haven’t installed the wiring yet, but if I have a problem it won’t be because of etrailer since they didn’t make the wiring harness. Will do this tomorrow.
Wire harness seems to be well made. Fits my trailer plug perfectly. Great price from etrailer, and pretty quick shipping as well. This is my second purchase from etrailer and I couldn't be more pleased with both transactions.
wiring harness of good quality, just as shown, thanks
An amazing wealth of products.
And an even greater knowledge base to draw on for info and direction.
etrailer.com is my favorite "bookmark"
worked out great
Product was received promptly and worked great on an older Jayco popup camper. I would use etrailer on future purchases for any of my trailer needs!
Great stuff to work with. Pallet racks and etrailer parts
I've always gotten good quality products and if there was a Problem Prompt an Courteous Responses,,Thx for always being Professional,,,
As expected.
Quick and easy to connect
great prices and prompt shipping
Works great so far.
As expected.
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