Solution for Connecting Trailer with 4-Way Round to 7-Way

Question

Question:

Jameson suggested cutting off my 4way round and wiring a 7way round on to it. Curious to know how difficult it is to wire that. Thanks

asked by: Jason S

0

Expert Reply:

Since there isn't an adapter available to convert the 4-way to a 7-way your best option would be to cut off the 4-way and wire it to a 7-way connector like part # A7WCB. This way your trailer will not require an adapter and everything would work.

expert reply by: Jameson C

0

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Jason S.

2/23/2017

Jameson suggested cutting off my 4way round and wiring a 7way round on to it. Curious to know how difficult it is to wire that. Thanks

Reply

Jameson C.

2/23/2017

It's pretty easy. Basically you would need to cut the wires and then strip back the side of the wiring that's on the trailer side and wire them accordingly to the # A7WCB. I attached a wiring diagram for you to use as well. You will need to wire the connector by function. To determine the functions of the wires you can trace them to see where they go or put 12 volts on each wire to see what illuminates.

Reply

Answer 1

Each of the circuits that the 7-Way Connector #A7WCB has makes contact with the vehicle 7-way pins with a single pin. In case you were asking about how the wires connect to the connector check out the attached picture.

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Answer 2

If your trailer brakes are still locked up, but not locked when the 7-way is disconnected that is a sure sign of one of two problems, either the wiring to the brakes has been damaged or the connector has corrosion which is causing the problem. The…

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Answer 3

Yes, 7-Way Round RV Style Trailer Connector #A7WCB will fit into the 7-Way on your 2015 Chevy Silverado. I have included a video showing an example installation for you and a link to our help article on trailer wiring.

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Answer 4

Since everything is working on the truck side the issue must be on the trailer side. I have included a picture that shows the pin functions of both a vehicle and trailer side 7-Way. You will need to check the configuration on the trailer side to…

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Answer 5

Since the wiring on your trailer doesn't use the standard colors the best method for determine their function is to simply apply 12V power to each one to see which lights they activate. Once you determine the function for each of the wires you…

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Answer 6

Your electric brakes should be wired to the brake controller output and you are correct that the other is a ground wire (please see accompanying diagram). What you'll need to do is use a circuit tester to find the correct pin on your 6-way.…

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Answer 7

I would love to help you upgrade the suspension on your Twilight 2800 travel trailer. The MORryde Rubber Equalizers for Tandem Axle Trailers #MR87ZR that you referenced are a great solution but we do need to double check a few things. First is that…

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Answer 8

The number you provided, "7753400" is a patent number which corelates to the Equalizer for E-Z Flex Suspension part #013-144-03. This is for a single equalizer but if you need the entire kit it's the Dexter E-Z Flex Suspension Kit part…

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Answer 9

The amount of bow that's put into trailer axles like the #7359765 is based on about how much a trailer is typically going to weigh that has a 3,500 lb capacity. So there's a bit of approximation and obviously it can't be totally perfect…

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Answer 10

The Trailer Hub and Drum Assembly part #AKHD-545-35-K is the correct replacement for an AL-KO 7230. In regards to the braking assemblies, I suggest getting a new pair, the Electric Trailer Brake Kit part #AKEBRK-35-SA. This option will save you some…

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Answer 11

The only way you could power interior dome lights on a trailer without it being connected to a tow vehicle would be to power the lights with a battery like a breakaway battery. How you choose to wire up the batteries will in the end be up to you, but…

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Answer 12

For your enclosed trailer application I have several suggestions for adding interior lighting that you can control directly via a switch. Since your current 4-pole trailer wiring does NOT include a 12V auxiliary power feed that could power inside…

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Solution for Connecting Trailer with 4-Way Round to 7-Way

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