etrailer | Hands-On with the Adapter 4 Pole to 7 Pole and 4 Pole w/Test Lamps

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Full transcript: www.etrailer.c...
Hi there, towing enthusiasts. Today, we're going to be taking a look at Curt's 4-way Adapter to 7-Way and 4-Way with Test Light. As you can see here, our trailer has a 7-way connector but our vehicle used to only have a 4-way connector. With this adapter, we are able to break it out and have a 4-way and a 7-way so we can fit our plug in, because without it it's like trying to fit a round peg in a square hole.When comparing this to other similar adapters, the things that I like about this one over those is that it has both the 7-way and the 4-way. Some are just an adapter at the back that will allow you to plug your 4-way into it, giving you a 7-way, but then you lose the functionality of your 4-way unless you we're to unplug it from your 7-way each time. I love having this breakout for your various accessories that you may use.Another feature that really stands out is the tester that's included in it.
This is a great thing to have on hand, because often whenever you have an issue with your trailer, it always seems to be like when you're out on vacation, and why spend time having to go to a shop to get it fixed when you can have a tester right here and you can immediately tell if the fault is with your vehicle side or your trailer side for a quick easy diagnosis so you can get that problem fixed and get back on the road.If you have an existing 4-way connector on your vehicle, this adapter will attach and it'll plug right into your 4-way connection. It'll break that out into a 4-way that you can still access, so if you have accessories that use a 4-way, you're not losing your 4-way, but you are gaining a 7-way. By plugging your 4-way into the connection at the back of this connector, it'll take all those 4-way connections and put it out here in your 7-way giving, you all your necessary lighting, which includes your left turn signal, right turn signal, tail lamps, and brake lamps.We've now plugged in our trailer's 7-way connector into the connection in the back of our vehicle and here you can see our lights are operating on our trailer through that 7-pole connection. This'll keep us safe and legal when using our trailer is and it allows everybody behind us to know our intentions when driving down the road because they can see all of our lighting signals.Now if you we're intending on using a larger trailer that may have had breaks on it or additional accessories such as a power jack, you may need some additional connections here at your 7-way. There are breakout wires for those remaining connections and you can wire those up as well.Of the three remaining connections, one of them will be for your brake signal, which is the output for a brake controller, so you can then add a brake controller.
Next, it also has a charge line cable, which is your 12-volt, so you can charge a battery on your trailer or operate a tongue jack. Lastly is your reverse light circuit, which you can tap into the vehicle, so whenever you backed up on your vehicle, those reverse lights will also illuminate on your trailer.When not in use, our 7-way campus spring loaded, which will help it shut and there is a rubber gasket on the inside which will keep out any moisture, ensuring a long lasting connection. There's also a dust for our 4-way. This one is manual, it's not spring loaded, but it does function similarly, keeping out moisture to ensure long life on that connector as well.Now that we've gone over some of the features of our connector here, let's go over how you would install it on a vehicle that has an existing 4-way and give you some tips and pointers on how to get it completely set up for a full 7-way connection.A mounting bracket does come included with your 7-way adapter. Hardware also comes included to get it mounted up.
You can attach this to the bottom of your hitch, to the bottom of your bumper, wherever you'd like. We're using a no-drill bracket, and this will allow us to secure our bracket to our hitch without having to drill into it, which is nice because you won't chip the paint or anything and you don't have to worry about corrosion occurring at those drilling points. From there, our bracket that came with our adapter bolts directly to this no-drill bracket. If you need a no-drill bracket and you don't want to drill to get the bracket that comes included with it installed, you can pick up these no-drill brackets here at etrailer.com.You're going to be using this just to take your lighting from the your existing 4-pole connector so you can use it with the 7-pole. All you have to simply do is

[@westbay5858]

There is no description how to hook up the yellow 12v line. Can I just run a wire into my trunk and plug it into an accessory outlet?

[@etrailer]

The 12V line will need to be run to the battery so that you have a sound connection and you don't run the risk in over loading a circuit.
www.etrailer.com/Wiring/Curt/C57674.html

[@dilanplattsfitness9333]

Will this adapter charge my camper battery?

[@etrailer]

The 7 way will provide a charge to your battery on your camper so long as there is a 12v line leading to the trailer battery.
www.etrailer.com/Wiring/Curt/C57674.html

[@kathygawley4647]

What is the part # for the no drill bracket you are using?

[@etrailer]

The no drill bracket used in this installation can be found in the following link!
www.etrailer.com/Accessories-and-Parts/Tow-Ready/18136.html
www.etrailer.com/Trailer-Wiring/CURT/C57674.html

[@jeffmoto72]

I watched that whole presentation and you did not indicate which color wire is used for trailer charge system 12 volt blue yellow or black dude?

[@etrailer]

You will use the yellow wire ( auxiliary wire ) to charge you trailer battery.
www.etrailer.com/Wiring/Curt/C57674.html

[@MrDjmurdock]

What gauge wire is the yellow, blue, black?

[@etrailer]

It is a 12 gauge wire.
www.etrailer.com/Wiring/Curt/C57674.html

[@ParkRoadGuy]

Why is my 12V 'test' LED always on? In this videos the light is not on.

[@etrailer]

The 12V will run all the time unless you wire it into a Battery Isolation Solenoid for it to shut off when not in use.
www.etrailer.com/Wiring/Curt/C57674.html

[@OYAHHH]

Why didn't you show the male/female status of all the ends of this connector. If you are doing a video of this kind that should be the 1st thing you show.

[@topflight2358]

model number ??

[@etrailer]

The part # for this adapter is C57674 on our website. You can find it in the following link.
www.etrailer.com/Wiring/Curt/C57674.html