2021 GMC Sierra 2500 Hitch Wiring
- CURT®7' 5th Wheel and Gooseneck Wiring HarnessGMC Sierra 2500 2021, 7' 5th Wheel and Gooseneck Wiring Harness by CURT®. Provides an extra 4-Way, 7-way RV blade connector in the truck bed. There is nothing like the luxury and power that go along with heavy-duty towing. 5th wheel RVs...Provides an extra connector for plugging in your trailer wiringIncludes a right-angle plug for easy installation$80.03
- CURT®20" USCAR Wiring Extension Harness (USCAR to USCAR)GMC Sierra 2500 2021, 20" USCAR Wiring Extension Harness (USCAR to USCAR) by CURT®. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting,...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$25.84
- CURT®4-Way Flat and 6-Way Round Custom Wiring ConnectorGMC Sierra 2500 2021, 4-Way Flat and 6-Way Round Custom Wiring Connector by CURT®. Output Type: 4-Way Flat. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$28.69
- CURT®T-ConnectorGMC Sierra 2500 2021, T-Connector by CURT®. For Models without Tow Plug. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$80.90
- CURT®Towed-Vehicle RV HarnessGMC Sierra 2500 2021, Towed-Vehicle RV Harness by CURT®. If you're towing your vehicle along for your next RV adventure, Bring It® with CURT! CURT towed-vehicle RV harnesses are the ideal solution to connecting your vehicle's...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$77.31
- CURT®OEM Car Socket for 7-Way RV BladeGMC Sierra 2500 2021, OEM Car Socket for 7-Way RV Blade by CURT®. Plugs into USCAR socket to provide a 7-way RV blade connector. Plugs into USCAR socket to provide a 7-way RV blade connector. There are several different types of...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$15.45 - $16.71
- CURT®Dual-Output Connector with Backup AlarmGMC Sierra 2500 2021, Dual-Output Connector with Backup Alarm by CURT®. Plugs Into Round Uscar Socket. Provides a 7-way RV blade, 4-way flat socket and backup alarm. Whether you're a contractor on your way to the jobsite or just a...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$32.37
- CURT®Heavy-Duty Replacement OEM 7-Way RV Blade SocketGMC Sierra 2500 2021, Heavy-Duty Replacement OEM 7-Way RV Blade Socket by CURT®. A CURT connector provides a reliable connection for your trailer wiring, using an industry-standard format, such as a 4-way flat, 6-way round or 7-way RV...Proudly made in Wisconsin, from start to finishBacked by a one-year parts warranty$17.49
- Standard®Trailer ConnectorGMC Sierra 2500 2021, Trailer Connector by Standard®. For over 100 years, professional technicians have trusted Standard® to replace the failed OE part. Standard® manufacturers the highest-quality, best-performing parts for all import...Designed with your specific vehicle in mindMeticulously crafted for an exact fit$24.14 - $32.22
- CURT®7-Way RV Blade to 5-Flat Electrical Adapter HarnessUniversal 7-Way RV Blade to 5-Flat Electrical Adapter Harness by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some trailers only need...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$37.66
- CURT®8' Dinghy Towing Adapter & Socket (7-Way RV Blade to 4-Way Round Vehicle)Universal 8' Dinghy Towing Adapter & Socket (7-Way RV Blade to 4-Way Round Vehicle) by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$65.73
- CURT®8' Dinghy Towing Adapter & Socket (7-Way RV Blade to 6-Way Round Vehicle)Universal 8' Dinghy Towing Adapter & Socket (7-Way RV Blade to 6-Way Round Vehicle) by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$67.40
- CURT®8' Dinghy Towing Electrical Adapter & Socket (7-Way RV Blade, Fits USCAR)Universal 8' Dinghy Towing Electrical Adapter & Socket (7-Way RV Blade, Fits USCAR) by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$67.40
- CURT®8' Dinghy Towing Electrical Extension & Sockets (6-Way Round)Universal 8' Dinghy Towing Electrical Extension & Sockets (6-Way Round) by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some trailers...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$67.76
- CURT®8' Electrical Adapter Harness (7-Way RV Blade Vehicle to 4-Way Flat Trailer)Universal 8' Electrical Adapter Harness (7-Way RV Blade Vehicle to 4-Way Flat Trailer) by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system....Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$36.13
- CURT®8' Electrical Adapter Harness (7-Way RV Blade Vehicle to 5-Way Flat Trailer)Universal 8' Electrical Adapter Harness (7-Way RV Blade Vehicle to 5-Way Flat Trailer) by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system....Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$43.59
- CURT®Electrical Adapter (4-Way Flat Vehicle to USCAR)Universal Electrical Adapter (4-Way Flat Vehicle to USCAR) by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some trailers only need the...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$33.68
- Hopkins Towing®12" Car End / 12" Trailer End 6-Pole Square Connector SetUniversal 12" Car End / 12" Trailer End 6-Pole Square Connector Set by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure...Impact and corrosion resistantFor use with pop up campers$6.34
- Hopkins Towing®4-Pole Round ConnectorUniversal 4-Pole Round Connector by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Multi-Tow™ provides multiple towing options from one connectorPlug-In Simple Wiring Kit$4.87 - $7.31
- Hopkins Towing®4-Pole Round Connector KitUniversal 4-Pole Round Connector Kit by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Includes matched set, socket and plug, mounting bracket, wire, splices, and hardwareDie-cast zinc connectors for durability$10.34
- Hopkins Towing®4-Wire Flat ConnectorUniversal 4-Wire Flat Connector by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Multi-Tow™ provides multiple towing options from one connectorPlug-In Simple Wiring Kit$1.84 - $5.65
- Hopkins Towing®4-Wire Flat Connector SetUniversal 4-Wire Flat Connector Set by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Multi-Tow™ provides multiple towing options from one connectorPlug-In Simple Wiring Kit$4.15 - $4.89
- Hopkins Towing®4-Wire Flat Connector Set with SplicesUniversal 4-Wire Flat Connector Set with Splices by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Multi-Tow™ provides multiple towing options from one connectorPlug-In Simple Wiring Kit$4.41 - $5.06
- Hopkins Towing®4-Wire Flat Connector with SplicesUniversal 4-Wire Flat Connector with Splices by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Multi-Tow™ provides multiple towing options from one connectorPlug-In Simple Wiring Kit$2.98 - $6.45
- Hopkins Towing®4-Wire Flat Y-Harness ConnectorUniversal 4-Wire Flat Y-Harness Connector by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Wiring kit for maintaining or re-wiring your trailerWishbone design - allows 2 brown wires to be run to each taillight$17.40 - $24.49
- Hopkins Towing®48" LED Test 4-Flat Vehicle Side ConnectorUniversal 48" LED Test 4-Flat Vehicle Side Connector by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of...LED test lights verify wiring continuityBuilt-in trouble-shooting$7.89
- Hopkins Towing®5-Pole Round ConnectorUniversal 5-Pole Round Connector by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Corrosion Resistant TerminalsDie-cast zinc connectors for durability$7.23 - $8.05
- Hopkins Towing®5-Wire Flat ConnectorUniversal 5-Wire Flat Connector by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Multi-Tow™ provides multiple towing options from one connectorPlug-In Simple Wiring Kit$9.41 - $17.06
- Hopkins Towing®6-Pole HD Round Connector KitUniversal 6-Pole HD Round Connector Kit by Hopkins Towing®. Functions include left turn/right turn, brakes, electric or surge brakes, auxiliary, and taillights. To have a greater peace of mind when driving with a trailer, go with this...Cable protector keeps wires from being damagedCable screws into the back of the connector$21.30
- Hopkins Towing®6-Pole Round ConnectorUniversal 6-Pole Round Connector by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...Multi-Tow™ provides multiple towing options from one connectorPlug-In Simple Wiring Kit$4.07 - $16.12