Trailer Wiring and Electrical

Trailer Wiring Adapters
Need to convert a 7-way trailer connector to a 4-flat or a 4-Way Flat to a 5-Way Flat connector, we have what you need. Our trailer wiring and electrical adapters allow for convenient connection to multiple trailers.
Trailer Connectors, Trailer Plug Wiring
Get your trailer ready for the road with trailer connectors and wiring harnesses from TruckSpring.com. We offer components for both Trailer-end and Car-end connections, that meet SAE specification J1128 assuring consistent quality and reliability.
Mounting Brackets
Do you have a trailer connector hanging that needs to be mounted correctly. We stock mounting brackets for 4, 5, 6, and 7 way trailer connectors. Trailer electrical mounting brackets allow for quick installation of electrical wiring plugs.
Power Converters
A trailer light power module eliminates additional electrical draw on the vehicles taillight circuits which ensures you have maximum trailer light brightness and protects you from overloading the system.
Tail Light Converters
Taillight Converters adapt import and domestic vehicles with separate turn and stop lights (3 wire system) to standard trailer taillight wiring (2 wire systems).
T-Connectors
Need to install trailer wiring on your car, truck SUV or van? Tow Ready T-One Connectors eliminate the need to cut or splice wires when installing trailer lights and feature a simple do-it-yourself installation of trailer wiring.
Testers and Test Equipment
Are you having a problem with your trailer lights and unable to find the problem? Use an inexpensive electrical tester and save time and money. Perfect for testing brake lights and turn signals, or easily locate short circuits in trailer wiring.
Wiring Components
Need to replace or install new wiring for your trailer or vehicle? Bulk wire, wire conduit and junction boxes can make the job easier and protect your trailer wiring from the elements.
Trailer Wiring Information
Not sure which wires attach to what on your trailer connectors? Does one of your turn signals not work and you’re not sure which wire to inspect? Check out or trailer wiring diagrams for a quick reference on trailer wiring.

If you're going to tow a trailer, you will need your trailer lights running before you go. We stock and complete line of trailer connectors and adapters for quick, professional trailer repairs.

Need to tow a trailer and your car, truck or SUV doesn't have trailer wiring? Today T-Connectors take the guess work out of trailer wiring. No need to splice, tape or cut wires. T-Connectors are vehicle specific and install quick and easy. Simply locate your wiring harness connector, unplug the connection and insert the T-Connector into the vehicle harness.

Popular Trailer Wiring and Electrical Products

Part #: 118384 T-One Connector for the GM Silverado, Sierra, Blazer, Jimmy, Suburban, Tahoe, Yukon, Avalanche, Envoy, Escalade, Colorado, Enclave - 118384
 
5.0
Tekonsha T-One connector 118384 for the GM Silverado, Sierra, Blazer, Jimmy, Suburban, Tahoe, Yukon, Avalanche, Envoy, Escalade, Colorado and Enclave requires no splicing of wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert the T-Connector into the vehicle's harness. No special tools required. Stop/Turn circuit capacity of 7.5 amps.
Your Price
$28.54
List Price
$37.18
You Save
$8.64
Part #: 787194 5-Way Coiled Jumper - 787194
Wesbar 5-Way Coilded Jumper with 4 foot cable. 5-way flat car and trailer ends.
Your Price
$17.17
List Price
$23.21
You Save
$6.04
Part #: 118144 4-Way Flat Bracket - 118144
Tow Ready Mounting Bracket for 4-Way Flat connectors includes self-tapping screws, bolts and nuts.
Your Price
$3.59
List Price
$4.19
You Save
$0.60
Part #: 118104 4-Flat Trailer End Connector to 6 Pole Square Adapter for Jayco Type Trailers - 118104
Tow Ready 4-Flat Trailer End Connector to 6 Pole Square Adapter is desiged to adapt 6 pole Jayco type trailers to 4-way. Cable is 31 inches long.
Your Price
$28.95
List Price
$38.52
You Save
$9.57
Part #: 118077 4-Way Round Connector, Car and Trailer End - Metal - 118077
Tow Ready 4-Way Round Connectors for Car and Trailer End. Designed to replace worn or damaged connectors. Sturdy metal housing.
Your Price
$9.41
List Price
$13.17
You Save
$3.76
Part #: 119190 ModuLite HD Trailer Light Module - 119190
ModuLite HD Protector with Integrated Circuit and Overload Protection Trailer Light Power Module.
Your Price
$56.74
List Price
$83.78
You Save
$27.04
Part #: 118138 7-Way Mounting Bracket for Standard Connectors - 118138
Tow Ready Mounting Bracket for 7-Way Flat Pin Connectors, includes self-tapping screws, bolts and nuts.
Your Price
$3.82
List Price
$4.83
You Save
$1.01
Part #: 54006-043 7-Way Molded Connector with Coiled 6 Foot Cable - Trailer End - 54006-043
Bargman 7-Way Molded Trailer End Connector has a 6 foot coiled cable with water and chemical resistant terminals and wires.
Your Price
$35.50
List Price
$46.20
You Save
$10.70
Part #: 54006-044 7-Way Molded Connector with Coiled 8 Foot Cable - Trailer End - 54006-044
Bargman 7-Way Molded Trailer End Connector has a 8 foot coiled cable with water and chemical resistant terminals and wires.
Your Price
$33.95
List Price
$53.10
You Save
$19.15
Part #: 421128 7-Way Junction Box - 421128
This junction box is ideal for professional trailer wiring jobs.
Your Price
$19.66
List Price
$27.47
You Save
$7.81

Repairing a Trailer - You Might Also Like: