1. Custom Fit Vehicle Wiring
  2. GMC
  3. Sierra 3500
  4. 2016
  5. EZ Connector
FITS 2016 GMC Sierra 3500
EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal - Custom - Vehicle/Trailer End

EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal - Custom - Vehicle/Trailer End

Item # 319-R7-02
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Custom Fit Vehicle Wiring
Confirmed to Fit
2016 GMC Sierra 3500

with factory 7-Way

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EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal - Custom - Vehicle/Trailer End 7 Contact 319-R7-02
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EZ Connector custom fit vehicle wiring for your 2016 GMC Sierra 3500 are available from etrailer.com. Installation instructions and reviews for your GMC custom fit vehicle wiring. Expert service, and cheapest custom fit vehicle wiring price guarantee. etrailer.com carries a complete line of EZ Connector products. Order your EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal - Custom - Vehicle/Trailer End part number 319-R7-02 online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (5)
  • Q & A (6)
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  • Why etrailer?

2016 GMC Sierra 3500 - EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal - Custom - Vehicle/Trailer End

  • Trailer Hitch Wiring
  • 7 Contact
  • EZ Connector
  • No Converter

Upgrade the 7-way connection on your GMC Sierra 3500 and trailer with this complete kit. Built-in magnets create tight connection. O-rings make a watertight seal. Face-to-face contacts mean no bent or broken terminals. Includes plug holder and dummy plug.


  • Trailer connectors install at the back of your vehicle and at the front of your trailer to power your trailer's signal lights
  • Powerful magnet in socket joins with magnet in plug to keep connection secure
    • Plugs stay tightly connected, despite the bumps and vibrations common with towing
  • Face-to-face electrical contacts - no pins or blades to bend or break
    • Eliminates concerns about electrical arcing and abraded pins
    • Contacts are easy to clean when necessary
  • Ideal for marine applications
    • Double silicon O-ring on plug creates watertight seal with socket to keep out moisture and debris
    • Water-block powder in cable keeps moisture away from wiring
  • Plug holder and dummy plug keep terminals from becoming exposed when connectors are not in use
  • Quick and easy installation
    • Plug wiring harness into vehicle - no cutting or splicing of wires
    • Hardwire trailer-end plug to existing trailer wiring
  • Vehicle-end connector fits into factory socket mounting location on most newer vehicles
    • Standard mounting bracket included
    • Adapter brackets (sold separately) also available
  • Made in the USA


  • Trailer-end cable length: 4'
  • Vehicle-end wiring harness length: 2'
  • Wiring configuration:
    • White: ground
    • Red: left turn
    • Brown: right turn
    • Black: auxiliary power
    • Green: tail lights
    • Yellow: reverse lights
    • Blue: brakes
  • Wire gauges:
    • 14 Gauge: red, brown, green, and yellow
    • 12 Gauge: blue
    • 10 Gauge: white and black
  • Limited lifetime warranty

These connectors give you the functionality of a 7-way connection, but without any pins or blades to bend or break. They're designed to create a secure, watertight connection that lasts. Strong magnets in both the plug and the socket keep the connection tight and secure, even when you're driving on rough terrain. Built-in O-rings create a seal to keep out water and debris. And spring-loaded, face-to-face electrical contacts are long-lasting and easy to clean. These factors combine for a strong, durable connection that's easy to use and to maintain.

Magnetic Plugs Stay Connected

The EZ Connector system uses magnets inside the plug and socket to hold the connectors together. Simply insert the trailer-end plug into the vehicle-end socket and the internal magnets will snap them together, no latch needed. To disconnect, just pull the plug out by hand.


This is an improvement over typical trailer connectors, which rely on a plastic latch on the socket lid to hold the trailer plug in place. With any trailer connector it can be easy to forget to disconnect the wiring when you unhook your trailer. If you drive off without disconnecting a standard 7-way plug, the connector will get pulled out of the socket, likely tearing off the lid. Without a lid, the electrical terminals are exposed to damaging moisture and debris. But if you forget to remove the EZ Connector plug when unhooking your trailer, the plug will simply disconnect from the receptacle as you drive off.

The magnets inside of these trailer connectors are made of neodymium, an extra-strong, rare-earth alloy. These high-quality magnets ensure a tight connection between the connectors that is stable enough to make it through intense bumps and road vibration.

Silicon O-Rings Create Watertight Seal


The EZ Connector trailer-end plug has a double O-ring that will create a seal with the socket when it's inserted into the vehicle-end connector.

Dummy Plug

Once you disconnect your trailer from your vehicle, just insert the included dummy plug into the EZ Connector socket. This plug also has a double O-ring designed to seal to the socket.

Plug Holder

A storage holder is included to keep the trailer-end EZ Connector plug safe and dry when it's not in use. This holder conveniently attaches to your trailer so that it is always available when you need it. This ensures that the terminals on the plug and socket stay protected from moisture and debris at all times.

All of the EZ Connector systems have earned a perfect score on the SAE water submersion test. This means that the seal created on these connectors will stay watertight, even if the connectors are completely submerged in water for extended periods of time.

No Pins or Blades to Bend or Break


The EZ Connector plug and socket both have spring-loaded, face-to-face electrical contacts instead of pins or blades. Pins and blades can bend, corrode, and even break off, which can lead to a permanently damaged connection. With the EZ Connector system, there are no pins or blades to bend or break. Because there are no pins or blades, there are also no pin sockets on the trailer-end plug that can trap debris. And if any dirt or debris does collect on the terminals of either end of an EZ Connector setup, it can be quickly and easily wiped away. No more scraping pins to get grime off. The result of all of this is a quality, effective connection every time you plug in.

R7-02 Easy Connector T-Connector with 7-Way, RV-Style Trailer Connector - GMC Sierra 3500 Side and Trailer Side

Installation Details 319-R7-02 Installation instructions

Customer Reviews

EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal - Custom - Vehicle/Trailer End - 319-R7-02

Average Customer Rating:  5.0 out of 5 stars   (5 Customer Reviews)

Upgrade the 7-way connection on your vehicle and trailer with this complete kit. Built-in magnets create tight connection. O-rings make a watertight seal. Face-to-face contacts mean no bent or broken terminals. Includes plug holder and dummy plug.

- 319-R7-02

Extremely High quality setup . Exactly what I was looking for . The magnets are incredibly strong . Wiring & connections are are top notch . Really nothing to pick apart on this item. Solves a problem that OEM's are not willing to go after.

- 319-R7-02
Dodge Ram Pickup

Love this connector. It is very high quality and comes complete with weather tight covers for both the trailer pig tail and the connector on the truck. Watch etrailers install video, it installs in minutes and let's you keep your factory 7 pin connector and 4 pin connector. I installed in on a RAM 2500 for use on my boat trailer since I installed a new Dexter electric/ hydraulic disc brake actuator. Also, don't get your finger caught between the cable end and the trailer frame...the magnet will do some damage to your finger tip. The magnets are very powerful. Again high quality product and I will buy again for future trailers. Thank you etrailer.

- 319-R7-02
2013 Chevrolet Silverado

- 319-R7-02

I put this on my 01 Chevy 2500hd. It is buy far the best up grade for the money. I have had no issues with lights not working since I installed this . Thanks for the great product!!

- 319-R7-02
2004 Chevrolet Silverado

Nice quality. Easy instructions. Looks like it will last for many years to come.


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B
Employee Hayden R
Installed by:
Hayden R
Employee Alexander C
Written by:
Alexander C

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