Recommended 7-Way Connector for a 2023 Chevy Express Cargo Van

Question

Question:

need to install a 7pin/4pin trailer plug on my 2023 chevy express 3500 cargo van. There appears to be a rectangle shaped multi pin socket under the rear bumper

asked by: Chris J

0

Expert Reply:

Unfortunately that 12 pin rectangular plug has nothing to do with the trailer wiring harness. To add a 7-way and 4-way connector to your 2023 Chevy Express Cargo van you're going to need to buy two separate harnesses. The reason for this is that the van's with the towing package came from the factory with the 7-way connectors like item # HM40975. The other ones have nothing and no one made a custom fit 7-way that just plugs in.

The first connector you will need is the Curt Wiring Harness item # 55540. This custom fit connector plugs into existing wiring in your rear cargo area which is located behind the interior trim panels in your rear cargo area. This will provide you with a 4-flat connector.

The second harness you will need is the Universal Installation Kit item # ETBC7. The kit includes a pre-wired 7- and 4-way trailer connector that mounts easily at the rear of your vehicle with an included bracket. This kit is designed for use on a vehicle with an existing 4-way flat trailer connector and plugs directly into it.

You will then connect the blue wire to the blue wire on the brake controller, connect the black wire to the positive post on the vehicle's battery, the white wire to ground, and the yellow wire to vehicle's reverse circuit if applicable. This will provide you with the ability to control your trailer's brakes and also provide you with a 12v power wire for you trailer's accessory lights.

I have linked a couple of installation videos below to help you get these parts set up.

Some other parts you will need to tow a trailer with brakes are listed here:

Trailer Hitch - etrailer Hitch item # e98861

Brake Controller - Redarc Tow-Pro Liberty Brake Controller item # RED24FR and Harness item # RED69FR

Wiring Harness Mount - No-Drill Mount Bracket item # 18136

Ball Mount - Rapid Hitch Adjustable, Aluminum Ball Mount Kit w/ 2 Greaseless Balls item # AM3461

Locking Pin - etrailer Hitch Receiver Lock for 2" and 2-1/2" Hitches item # e98881

expert reply by: Jerred H

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Answer 1

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Answer 2

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Answer 3

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Answer 4

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Answer 5

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Answer 6

This will depend on if you have a Dually #TL94PR or Single #TL67DR rear wheels on your 2021 Chevrolet Silverado 3500 long bed. These are a fit for the factory receiver, if you have or want to switch to a TorkLift Receiver #TL74FR this would use a…

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Answer 7

Hey Antoine, so the two kits you mentioned are actually really similar and honestly I would go with the part #ETBC7 if I were you. The #ETBC7L is basically the same thing minus a couple wires and breakers so you may as well get the kit that has…

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Answer 8

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Answer 9

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

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Answer 10

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Answer 11

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Recommended 7-Way Connector for a 2023 Chevy Express Cargo Van

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