Recommended 4-Way to 7-Way Vehicle Wiring Adapter

Question

Question:

My 2016 honda pilot has a 4 pole. my trailer has a 7-way round blade. Is there an adapter that will fit, or do I have to have all new wiring put on my tow vehicle. I only need it to run brake lights and turn signals.

asked by: Caran L

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Expert Reply:

The Adapter 4-Pole to 7-Pole and 4-Pole part # 37185 is a great and easy way to convert the 4-way you have to the 7-way you want and still have a working 4-way if needed in the future.

This is a simple plug and play installation if you are only looking for the lighting signals you will simply plug in the 4-way to the adapter and you're all set. Simply ground the connector to the vehicle frame or an existing ground.

expert reply by: Randy B

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Answer 1

Yes, we have a few options for a 7 way to 4 way flat trailer connection. One option if you don't need an extension is the Hopkins Adapter 7 Pole to 4 Pole with Tester and Cover, #47345. This adapter has an LED tester internally to allow you…

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Answer 2

The USCAR pin out is the standard 7-way pin out which the Wesbar adapter part #707250 matches.

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Answer 3

Yes, the Wesbar Adapter - 7-Way RV to 4-Way or 5-Way Flat - 18" Long #707250 is compatible with your 2017 Chevy Silverado Z-71 with trailer package. This adapter will fit into the factory 7-way connector to allow you to use a 4-way flat…

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Answer 4

Lithium batteries require a higher voltage to charge than standard batteries which means you can't charge one directly from the 7-way 12 volt accessory circuit you mentioned. You could if you used the Redarc In-Vehicle BCDC Battery Charger…

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Answer 5

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…

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Answer 6

The best solution for your situation would be to use a circuit tester, like part #PTW2993, to wire your trailer wires to a seven-way trailer connector, like part #A7WCB. Wiring by function is the best way to make sure you have the trailer connector…

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Answer 7

Sounds like you are looking for the #A7WCB which matches the part number and description you mentioned. This is a replacement trailer side 7-way plug.

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Answer 8

The 40-amp circuit on your 7-way is really intended for delivering only a modest current to maintain an already-charged trailer battery while you're driving. It is not really intended for operating a power-hungry item such as a winch. A…

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Answer 9

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 10

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 11

Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors…

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Answer 12

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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