1978 GMC C35 Trailer Wiring Kits

Your 1978 GMC C35 might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Trailer Wiring Kits you desperately need.

We currently carry 4 Trailer Wiring Kits to choose from for your 1978 GMC C35, and our inventory prices range from as little as $7.99 up to $49.99.

On top of low prices, Advance Auto Parts offers 4 different trusted brands of Trailer Wiring Kits for the 1978 GMC C35. We only sell parts from trusted brands like Hopkins so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 48 reviews on our Trailer Wiring Kits for the 1978 GMC C35 from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Trailer Wiring Kits stock in-person!

Trailer Wiring Kits for Your 1978 GMC C35

Hopkins – 48035, 4 Flat Vehicle Side Towing Connector (48") (Part No.48035)

48035, 4 Flat Vehicle Side Towing Connector (48")

from

$7.99
Get your vehicle ready to tow the most common type of trailer on the road by installing this vehicle side 4 flat. This 4 flat connector carries the trailer’s basic lighting and includes printed wire functions that make installation quick.

Product Features:
  • 48 inch length
  • Corrosion Resistant Terminals
  • Most Commonly Used Trailer Connector
  • Found On Small Boat/Utility
  • Printed wire functions for easy wire reference
  • Printed Wire Functions For Easy Wire Reference
  • 100 Percent Tested
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Carquest – Trailer Connector Kit (Part No.TC262)

Trailer Connector Kit

from

$36.05
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
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Carquest Premium – Trailer Connector Kit (Part No.TCA1358)

Trailer Connector Kit

from

$49.99
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.

Product Features:
  • CarQuest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
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CURT – Custom Wiring Harness (4-Way Flat Output) (Part No.55311)

Custom Wiring Harness (4-Way Flat Output)

from

$26.49
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 Blazer, K5 Blazer, C10, C20, C30, K10, K20 and K30 pickup or Suburban and GMC C15, C1500, C25, C2500, C35, C3500, K15, K1500, K25, K2500, K35 and K3500 pickup or Suburban (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.

Product Features:
  • Plugs into existing OEM vehicle socket to provide a 4-way flat socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Dust cover included to keep connector clean when not in use
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