DORMAN ELECTRICAL TRAILER & TOWING SOLUTIONS
For trailer and towing parts you can trust, Dorman is behind you all the way.
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Trailer and towing electrical systems are constantly exposed to harsh conditions including moisture, corrosion, vibration and repeated connect/ disconnect cycles. When connectors fail or wiring becomes damaged, essential trailer functions like brake lights, turn signals, marker lights and electric brakes can be compromised. Whether maintaining a factory setup or building a custom wiring solution, having the right components is critical for safe, dependable towing.
Dorman’s trailer and towing line offers a comprehensive range of replacement parts, adapters and accessories designed to restore or upgrade electrical connections across a wide variety of vehicles and trailers.
With coverage for common 4-pin (flat), 6-pin and 7-blade connectors, these components support critical lighting functions as well as advanced features such as trailer brakes and auxiliary power. From direct replacements for worn factory connectors to versatile adapters that bridge mismatched configurations, our line takes the headaches out of trailer projects and repairs.
Features and Benefits
Comprehensive coverage
New line of parts supports 4-pin flat, 6-pin and 7-blade connections for lighting, braking and auxiliary power functions across a wide range of vehicles and trailers
Versatile solutions
Including direct replacements, adapters and custom wiring components to repair, upgrade or build complete systems
Built for durability
Designed to withstand harsh environments including moisture, corrosion, vibration and repeated use
Simplify installation
Adapters, connectors and harness components help reduce repair time and ensure reliable connections
Rugged performance
Helps restore or enable critical trailer functions including brake lights, turn signals, marker lights and electric brakes for safer towing
Easily find trailer and towing parts with Dorman’s complete electrical solutions program.
Dorman’s new trailer and towing solutions program simplifies the shopping experience while delivering components your customers need. Featuring a comprehensive range of connectors, adapters, wiring kits, brake accessories and related parts, the program provides coverage for the most common towing electrical applications. Even better, the efficient product mix covers the vast majority of customer needs in a compact footprint.
In addition to replacement connectors, Dorman provides components for custom wiring projects, enabling technicians and installers to create seamless solutions for unique towing setups. Engineered for durability and ease of installation, these products help ensure long-lasting performance in real-world conditions while simplifying repair and customization.
Dorman Hopkins Interchange
Search by Dorman or Hopkins part number, connector type (e.g. "7-Blade", "4-Flat") or description, or filter by category.
| 14762 | 40955 | 7-Blade and 4-Flat Vehicle Side to Ford / GM OEM Connector | Connectors |
| 14763 | 41145 | 7-Blade Vehicle Side to Chevrolet / GMC Wiring Connector | Connectors |
| 14766 | 42145 | 7-Blade and 4-Flat Vehicle Side to Dodge OEM Connector | Connectors |
| 14767 | 41153 | OE Vehicle Side Tow Connector to 5-Flat Trailer Side Adapter | Adapters |
| 38786 | 48145 | 4-Flat Vehicle to Trailer Extension 12" | Connectors |
| 38787 | 48255 | 4-Flat Vehicle Side to Open Wire Y-Harness 25' | Wiring Kits |
| 38788 | 47355 | 7-Blade Vehicle Side to 4-Flat Trailer Side Adapter | Adapters |
| 38792 | 48675 | 4-Flat Vehicle Side LED Tester with Dust Cover | Accessories |
| 48157 | 47365 | 7-Blade Vehicle Side to 4-Flat Trailer Side Flex Adapter | Adapters |
| 48158 | 47207 | 4-Flat Vehicle Side to 7-Blade Trailer Side Adapter | Adapters |
| 48159 | 47335 | 7-Blade Vehicle Side to 4-Flat Trailer Side Illuminating Adapter | Adapters |
| 48162 | 47545 | 7-Blade Vehicle Side to 6-Way Round Trailer Side Adapter-CP Auxiliary | Adapters |
| 48163 | 47555 | 7-Blade Vehicle Side to 6-Way Round Trailer Side Adapter-CP Brake | Adapters Braking |
| 48164 | 47435 | 6-Way Round Vehicle Side to 7-Blade Trailer Side Adapter | Adapters |
| 48165 | 47210 | 7-Blade Vehicle Side Universal Connector Kit | Wiring Kits |
| 48166 | 47575 | 7-Blade Vehicle Side to 6-Way Round and 4-Flat Trailer Side Adapter-CP Brake | Adapters Braking |
| 48170 | 47015 | 7-Blade Vehicle Side to 4-Flat Trailer Side Coiled Adapter | Adapters |
| 53400 | 20050 | Trailer Breakaway Switch with LED Test Indicator | Braking |
| 53410 | 47715 | Ford Plug-In Brake Controller Wiring Harness | Braking |
| 53508 | 47795 | Chevrolet / GMC Plug-In Brake Controller Wiring Harness | Braking |
| 62000 | 48505 | 7-Blade Trailer Side Connector | Connectors |
| 62001 | 48115 | 4-Flat Trailer Side Connector 12" | Connectors |
| 62003 | 47345 | 7-Blade Vehicle Side to 4-Flat Trailer Side LED Test Adapter | Adapters |
| 62004 | 48215 | 4-Flat Vehicle Side and Trailer Side Wiring Connectors (48"/12") | Connectors Wiring Kits |
| 62005 | 48502 | 7-Blade Trailer Side Illuminating Connector | Connectors |
| 62006 | 47965 | 2-Flat Extension Connector 12" | Connectors |
| 62007 | 20245 | 7-Blade Trailer Side Molded Connector with 6' Cable | Connectors |
| 62008 | 48035 | 4-Flat Vehicle Side Connector 48" | Connectors |
| 62009 | 47115 | 4-Flat Extension Connector 48" | Connectors |
| 62011 | 48480 | 7-Blade Vehicle Side Connector | Connectors |
| 62013 | 48445 | 6-Way Round Trailer Side Connector | Connectors |
| 62014 | 48485 | 7-Blade Vehicle Side Connector | Connectors |
| 62015 | 48510 | 7-Blade Trailer Side Ergonomic Grip Connector | Connectors |
| 62016 | 40940 | Ford/GM to 7 Blade Vehicle Side OEM Plug In Tow Connector | Connectors |
| 62017 | 47105 | 4-Flat Extension Connector 32" | Connectors |
| 62019 | 47185 | 4-Flat Vehicle Side to 7-Blade and 4-Flat Trailer Side Multi-Output Connector | Connectors |
| 62022 | 48435 | 6-Way Round Vehicle Side Metal Connector | Connectors |
| 62023 | 47895 | 5-Flat Vehicle Side and Trailer Side Wiring Connectors (48"/12") | Connectors Wiring Kits |
| 62024 | 47205 | 4-Flat Vehicle Side to 7-Way Trailer Side Adapter | Adapters |
| 62025 | 48295 | 4-Way Round Vehicle Side and Trailer Side Connectors | Connectors |
| 78897 | 49915 | 4-Wire Bonded Trailer Wire (16/18 Gauge, 25') | Wiring Kits |
| 78898 | 49905 | 4-Wire Bonded Trailer Wire (14 Gauge, 25') | Wiring Kits |
| 78899 | 48625 | Universal Trailer Connector Mounting Bracket | Accessories |
Get vehicle applications and technical details at dormanproducts.com | Tech Line: 1-866-933-2911