2003 GMC Safari Trailer Wiring

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Keep Your 2003 GMC Safari in Top Shape with Quality Trailer Wiring

Whether you’re repairing or upgrading your Trailer Wiring, using high-quality parts is key to keeping your 2003 GMC Safari looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Trailer Marker Light Switch Relay and Trailer Wiring Kits. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 2003 GMC Safari Trailer Wiring at Advance Auto Parts is around $33.82, with a range that starts at $21.49 and goes up to $41.49. With 3 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like GM Genuine Parts Multi-Purpose Relay, 15-81106, CURT Custom Wiring Harness (4-Way Flat Output), 55411, and Carquest Trailer Connector Kit, TCC1338 start at just $21.49 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Trailer Wiring, don’t forget to check out other key components like Towing Mirrors and Trailer Hitches. At Advance Auto Parts, we’re here to help you keep your 2003 GMC Safari in peak condition, inside and out.

Essential 2003 GMC Safari Trailer Wiring

GM Genuine Parts – GM Genuine Parts Multi-Purpose Relay, 15-81106 (Part No.15-81106)

GM Genuine Parts Multi-Purpose Relay, 15-81106

from

$41.49
GM Genuine Parts Wiring Relays are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These relays help connect or disconnect power to a vehicle accessory when it receives a low voltage signal from a switch. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
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CURT – CURT Custom Wiring Harness (4-Way Flat Output), 55411 (Part No.55411)

CURT Custom Wiring Harness (4-Way Flat Output), 55411

from

$21.49
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness — also called a T-connector — is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Chevy Astro, Chevy Blazer, Oldsmobile Bravada, GMC Jimmy and GMC Safari (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination — maybe it’s the boat landing at your favorite fishing spot, maybe it’s a campsite that overlooks one of nature’s masterpieces, or maybe it’s the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.
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Carquest Premium – Carquest Trailer Connector Kit, TCA1254 (Part No.TCA1254)

Carquest Trailer Connector Kit, TCA1254

from

$10.29
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Trailer Connector Kit, TCC1338 (Part No.TCC1338)

Carquest Trailer Connector Kit, TCC1338

from

$38.49
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More

Most Popular Trailer Marker Light Switch Relay for 2003 GMC Safaris

Enhance your 2003 GMC Safari with this popular Trailer Marker Light Switch Relay we have in stock, for $41.49.

GM Genuine Parts – GM Genuine Parts Multi-Purpose Relay, 15-81106 (Part No.15-81106)

GM Genuine Parts Multi-Purpose Relay, 15-81106

from

$41.49
GM Genuine Parts Wiring Relays are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These relays help connect or disconnect power to a vehicle accessory when it receives a low voltage signal from a switch. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
See More

Best-Selling 2003 GMC Safari Trailer Wiring Kits

Upgrade your Safari with one of our 2 best-selling Trailer Wiring Kits.

CURT – CURT Custom Wiring Harness (4-Way Flat Output), 55411 (Part No.55411)

CURT Custom Wiring Harness (4-Way Flat Output), 55411

from

$21.49
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness — also called a T-connector — is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Chevy Astro, Chevy Blazer, Oldsmobile Bravada, GMC Jimmy and GMC Safari (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination — maybe it’s the boat landing at your favorite fishing spot, maybe it’s a campsite that overlooks one of nature’s masterpieces, or maybe it’s the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.
See More

Carquest Premium – Carquest Trailer Connector Kit, TCC1338 (Part No.TCC1338)

Carquest Trailer Connector Kit, TCC1338

from

$38.49
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More

FAQs for 2003 GMC Safari Trailer Wirings

What are the best-selling Trailer Wirings for 2003 GMC Safaris?

Out of 3 Trailer Wirings that fit 2003 GMC Safaris, the following parts are the top sellers:

What’s the price range for 2003 GMC Safari Trailer Wiring?

The prices of Trailer Wiring for the 2003 GMC Safari range from $21.49 up to $41.49 for the most premium parts.

What is the average price of a Trailer Wiring for a 2003 GMC Safari?

The average price for Trailer Wirings for the 2003 GMC Safari is $33.82. Keep in mind the variety of part types within our Trailer Wiring category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Trailer Wiring for other GMC Safari model years?

Yes, we carry Trailer Wiring for 9 model years of GMC Safaris between 1992 and 2005. The following model years are the most popular for Trailer Wiring purchases: 2005, 2004, 1999, 1998, 1997, 1996, 1995, 1994, and 1993.

What are the cheapest Trailer Wiring for my 2003 GMC Safari?

The cheapest 2003 GMC Safari Trailer Wiring we carry are:

Does Advance Auto Parts sell Trailer Wiring for any other 2003 GMC models?

Yes. We stock Trailer Wiring for 17 other popular 2003 GMC models. Some of the most popular are 2003 Yukon Trailer Wiring, 2003 Sierra 1500 Trailer Wiring, 2003 Yukon XL 1500 Trailer Wiring, 2003 Sierra 2500 HD Trailer Wiring, and 2003 Yukon XL 2500 Trailer Wiring.

What types of Trailer Wiring do you sell for my 2003 GMC Safari?

As of 8/2/26, these are some of the most in-demand types of Trailer Wiring for a 2003 GMC Safari:

Can I get help with 2003 GMC Safari Trailer Wiring orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Trailer Wiring and more.

What is your return policy for GMC Safari Trailer Wiring?

Advance Auto Parts keeps returns simple. For new GMC Safari Trailer Wiring and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.