Top Trailer Wiring 101

CURT 58092 Vehicle-Side and Trailer-Side 6-Pin Round Wiring Harness Connectors

  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of these trailer wiring connectors. The trailer plug features tabs on the sides for a better grip when plugging into the vehicle socket or unplugging.
  • VERSATILE DESIGN. These connectors make great replacement 6-way wiring plugs and sockets. They connect the taillights, brake lights, turn signals, electric trailer brakes and an auxiliary power wire.
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of these 6-pin trailer wiring connectors is made from strong, durable die-cast metal.
  • RELIABLE CONNECTION. These 6-way round trailer wiring connectors are equipped with locking tabs that secure the plug into the socket when inserted. This helps maintain a reliable wiring connection in spite of bumps and vibrations while towing.
  • WEATHER-RESISTANT. To help protect the splice-in wiring connections, these 6-wire trailer plugs feature concealed terminals, keeping the wires from direct exposure to rain, dirt, road salt and other corrosive threats (wires not included).
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CURT 58380 Vehicle-Side and Trailer-Side 4-Pin Flat Wiring Harness with 12-Inch Wires

  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of these vehicle-trailer connectors. They feature tabs on the top and bottom for a better grip when plugging in or unplugging.
  • RELIABLE CONNECTION. These 4-pin trailer wiring plugs come ready to splice into your existing vehicle and trailer wiring. They have 16-gauge wires and can be used to connect the taillights, brake lights and turn signals.
  • VERSATILE DESIGN. These vehicle-trailer connectors make great replacement 4-flat wiring plugs and sockets. The 4-pin wiring design matches industry-standard 4-way flat connectors and is compatible with a wide variety of trailers.
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of these 4-pin trailer wiring plugs is made from durable black molded rubber that will never rust or corrode.
  • READY TO INSTALL. Equipped with color-coded wires, these 4-prong trailer wiring connectors come ready to install. The 12-inch wire loop provides extra length for an easy installation.
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CURT 58050 Vehicle-Side and Trailer-Side 4-Pin Flat Wiring Harness with 72-Inch Wires

  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of these vehicle-trailer connectors. They feature tabs on the top and bottom for a better grip when plugging in or unplugging.
  • RELIABLE CONNECTION. These 4-pin trailer wiring plugs come ready to splice into your existing vehicle and trailer wiring. They have 16-gauge wires and can be used to connect the taillights, brake lights and turn signals.
  • VERSATILE DESIGN. These vehicle-trailer connectors make great replacement 4-flat wiring plugs and sockets. The 4-pin wiring design matches industry-standard 4-way flat connectors and is compatible with a wide variety of trailers.
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of these 4-pin trailer wiring plugs is made from durable black molded rubber that will never rust or corrode.
  • READY TO INSTALL. Equipped with color-coded wires, these 4-prong trailer wiring connectors come ready to install. The 72-inch wire loop provides plenty of extra length for a flexible installation.
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CURT 58090 Vehicle-Side 6-Pin Round Trailer Wiring Harness Socket

  • SPRING-LOADED COVER. To promote long-lasting use and weather resistance, this round 6-pin trailer wiring socket comes with a spring-loaded dust cover. It protects the 6-way connector when not in use, shielding it from the outdoor elements.
  • VERSATILE DESIGN. This vehicle-trailer wiring connector makes a great replacement 6-way wiring socket. It connects the taillights, brake lights, turn signals, electric trailer brakes and an auxiliary power wire.
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this 4-pin trailer wiring connector is made from strong, durable die-cast metal.
  • RELIABLE CONNECTION. This 6-way round trailer wiring socket is equipped with a locking tab on the inside of the dust cover that secures the plug in place when inserted. This helps maintain a reliable wiring connection.
  • WEATHER-RESISTANT. To help protect the splice-in wiring connections, this 6-wire vehicle socket features concealed terminals, keeping the wires from direct exposure to rain, dirt, road salt and other corrosive threats (wires not included).
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CURT 58071 Vehicle-Side 4-Pin Round Trailer Wiring Harness Socket

  • SPRING-LOADED COVER. To promote long-lasting use and weather resistance, this round 4-pin trailer wiring socket comes with a spring-loaded dust cover.....
  • VERSATILE DESIGN. This vehicle-trailer wiring connector makes a great replacement 4-flat wiring socket. It matches industry-standard 4-way round....
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this 4-pin trailer wiring connector is made from strong, durable....
  • RELIABLE CONNECTION. This 4-way round trailer wiring socket is equipped with a locking tab on the inside of the dust cover that secures the plug in....
  • WEATHER-RESISTANT. To help protect the splice-in wiring connections, this 4-wire vehicle socket features concealed terminals, keeping the wires from....
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Round 7 pin Trailer Connector 7 Way Trailer Wiring - 7 Way Trailer Plug Trailer Wiring Harness Connector

  • Dustproof . This 7-way RV socket is equipped with a spring-loaded dust cover that keeps the connection points dry and protected when not in use, ensuring strong, consistent power for years to come.
  • Weather resistant. This trailer wiring plug comes with concealed wire terminals. This helps protect the splice-in connection points for the wires, keeping them safe from dirt, rain, corrosion and other condition.
  • Reliable connection. This 7-pin trailer wiring plug comes ready to splice into your existing trailer wiring. It can be used to connect the taillights, brake lights, reverse lights, turn signals, trailer brakes and auxiliary power.
  • Multifunction application. This connector makes a great replacement 7-way RV connector and is interchangeable with virtually any trailer-side 7-way RV connector. 7-pin trailer wiring is commonly used for towing RV travel trailers.
  • Durable material. For long-lasting service and a reliable connection, the housing of this 7-pin trailer wiring plug is made from durable Die-cast zinc that was durable and solid.
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CURT 58150 Vehicle-Side 7-Pin RV Blade Trailer Wiring Harness Connector

  • PROTECTED. This 7-way RV blade socket is equipped with a spring-loaded dust cover that keeps the connection points dry and protected when not in use, ensuring strong, consistent power for miles to come.
  • WEATHER-RESISTANT. This trailer wiring socket comes with concealed wire terminals. This helps protect the splice-in connection points for the wires, keeping them safe from dirt, rain, corrosion and other threats.
  • RELIABLE CONNECTION. This 7-pin trailer wiring socket comes ready to splice into your existing vehicle wiring. It can be used to connect the taillights, brake lights, reverse lights, turn signals, trailer brakes and auxiliary power.
  • VERSATILE DESIGN. This connector makes a great replacement 7-way RV blade connector and is interchangeable with virtually any vehicle-side 7-way RV connector. 7-pin trailer wiring is commonly used for towing RV travel trailers.
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this 7-pin trailer wiring socket is made from durable black plastic that will never rust or corrode.
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CURT 58170 Vehicle-Side 7-Pin Round Trailer Wiring Harness Socket

  • SPRING-LOADED COVER. To promote long-lasting use and weather resistance, this round 7-pin trailer wiring socket comes with a spring-loaded dust cover. It protects the 7-way connector when not in use, shielding it from the outdoor elements.
  • VERSATILE DESIGN. This connector makes a great replacement 7-way wiring socket. It connectors and connects the taillights, brake lights, turn signals, reverse lights, electric trailer brakes and an auxiliary power wire.
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this 4-pin trailer wiring connector is made from strong, durable die-cast metal.
  • RELIABLE CONNECTION. This 7-way round trailer wiring socket is equipped with a locking tab on the inside of the dust cover that secures the plug in place when inserted. This helps maintain a reliable wiring connection.
  • WEATHER-RESISTANT. To help protect the splice-in wiring connections, this 7-wire vehicle socket features concealed terminals, keeping the wires from direct exposure to rain, dirt, road salt and other corrosive threats (wires not included).
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CURT 58155 Heavy-Duty Vehicle-Side 7-Pin RV Blade Trailer Wiring Harness Connector , Black

  • STRONG PROTECTED. This heavy-duty 7-way RV blade socket is equipped with a spring-loaded dust cover and rubber seal that keep the connection points dry and protected when not in use, ensuring strong, consistent power for miles to come.
  • WEATHER-RESISTANT. This trailer wiring socket comes with concealed wire terminals. This helps protect the splice-in connection points for the wires, keeping them safe from dirt, rain, corrosion and other threats.
  • RELIABLE CONNECTION. This heavy-duty 7-pin trailer wiring socket comes ready to splice into your existing vehicle wiring. It can be used to connect the taillights, brake lights, reverse lights, turn signals, trailer brakes and auxiliary power.
  • VERSATILE DESIGN. This connector makes a great upgrade or replacement 7-way RV blade connector and is interchangeable with virtually any vehicle-side 7-way RV connector. 7-pin trailer wiring is commonly used for towing RV travel trailers.
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this heavy-duty 7-pin trailer wiring socket is made from durable black plast....
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CURT 56056 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select GMC Acadia

  • EASY TO INSTALL. No cutting! No splicing! This trailer wiring harness kit plugs into existing factory wiring on your vehicle and equips it with a standard, rear 4-pin trailer wiring connector for plugging in and towing a trailer.
  • STANDARD CONNECTOR. This plug-in 4-flat trailer wiring can be used to connect trailer tail lights, brake signal lights and turn signals. 4-way trailer light wiring is popular on a variety of trailers, adding versatile towing options for your vehicle.
  • VEHICLE-SPECIFIC. This aftermarket, vehicle-trailer wiring harness is designed for select years of the GMC Acadia.
  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this vehicle socket. It features tabs on the top and bottom for a better grip when plugging into your trailer or unplugging.
  • DUST COVER. To promote long-lasting use and weather resistance, this 4-pole trailer lighting wire harness comes with a rubber dust cover. It easily fits onto the 4-way flat connector when not in use, protecting it against the outdoor elements.
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CURT 55384 Replacement Vehicle-Side Custom USCAR 4-Pin Trailer Wiring Harness, Black

  • NOTE: Vehicle must already be equipped with USCAR.
  • EASY TO INSTALL. No cutting! No splicing! This trailer wiring harness Ts into an existing USCAR connection on your vehicle and equips it with a standard 4-pin trailer wiring connector for plugging in and towing a trailer.
  • STANDARD CONNECTOR. The 4-flat trailer wiring can be used to connect trailer taillights, brake lights and turn signals. 4-way trailer wiring is popular on a wide variety of trailers, adding versatile towing options for your vehicle.
  • USCAR-SPECIFIC. This USCAR wiring harness is designed for select vehicles with a standard USCAR socket, ensuring the easiest possible installation and the most reliable wiring connection.
  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this vehicle socket. It features a tab on top for a better grip when plugging into your trailer or unplugging.
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of the 4-pin vehicle wiring socket is made from durable black molded rubber that will never rust or corrode.
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CURT 56394 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Chevrolet Traverse , Black

  • EASY TO INSTALL. No cutting! No splicing! This trailer wiring harness kit plugs into existing factory wiring on your vehicle and equips it with a standard, rear 4-pin trailer wiring connector for plugging in and towing a trailer.
  • STANDARD CONNECTOR. This plug-in 4-flat trailer wiring can be used to connect trailer tail lights, brake signal lights and turn signals. 4-way trailer light wiring is popular on a wide variety of trailers, adding versatile towing options for your vehicle.
  • VEHICLE-SPECIFIC. This aftermarket, vehicle-trailer wiring harness is designed for select years of the Chevrolet Traverse (factory tow package required).
  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this vehicle socket. It features tabs on the top and bottom for a better grip when plugging into your trailer or unplugging.
  • DUST COVER. To promote long-lasting use and weather resistance, this 4-pole trailer lighting wire harness comes with a rubber dust cover. It easily fits onto the 4-way flat connector when not in use, protecting it against the outdoor elements.
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