Trailer Hitch Wiring & Electrical
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- Tekonsha®Tow Harness (W/O Jumper Harness) (118267)Tow Harness without Jumper Harness (118267) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert the T-One...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$53.95
- Tekonsha®Tow Harness (With Circuit Protected ModuLite® HD Module) (118294)Tow Harness with Circuit Protected ModuLite® HD Module (118294) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$37.23
- Tekonsha®Tow Harness (With Circuit Protected ModuLite® HD Module) (118265)Tow Harness with Circuit Protected ModuLite® HD Module (118265) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$154.76
- Tekonsha®Tow Harness (With Circuit Protected ModuLite® HD Module) (118253)Tow Harness with Circuit Protected ModuLite® HD Module (118253) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$118.02
- Tekonsha®Tow Harness (With Circuit Protected ModuLite® HD Module) (118269)Tow Harness with Circuit Protected ModuLite® HD Module (118269) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$81.70
- Tekonsha®Tow Harness (With Circuit Protected ModuLite® HD Module) (118290)Tow Harness with Circuit Protected ModuLite® HD Module (118290) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$145.10
- Tekonsha®Tow Harness (With Circuit Protected ModuLite® Module) (118255)Tow Harness with Circuit Protected ModuLite® Module (118255) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$72.12
- Tekonsha®Tow Harness (With Jumper Harness) (118266)Tow Harness with Jumper Harness (118266) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert the T-One Connector...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$137.80
- Tekonsha®Tow Harness (With Upgraded Circuit Protected ModuLite® HD Module) (118289)Tow Harness with Upgraded Circuit Protected ModuLite® HD Module (118289) by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the...Exact replacement for damaged factory wiring harnessesInstalls in seconds on vehicles not factory pre-wired$116.34
- Hopkins®Multi-Tow™ 6 Pole Round and 4-Wire Flat Towing Wiring Kit (40965)Multi-Tow™ 6 Pole Round and 4-Wire Flat Towing Wiring Kit (40965) by Hopkins®. 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....Multi-Tow® provides 6 Pole Round and 4 Wire Flat towing options from one connectorPlug-In Simple®: No cutting, No splicing, Saves time$29.88
- Hopkins®Multi-Tow™ 7 RV Blade and 4-Wire Flat Socket (40975)Multi-Tow™ 7 RV Blade and 4-Wire Flat Socket (40975) by Hopkins®. With Mounting Bracket. OE Replacement. 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...Multi-Tow® provides 7 Blade and 4 Flat towing options from one connectorPlug-In Simple®: No cutting, No splicing, Saves time$41.28
- DIY Solutions®Trailer Wiring Harness (BAS00787)Trailer Wiring Harness (BAS00787) by DIY Solutions®. With 7 Pin Connector. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for....Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$65.92$67.27Save $1.35 (2%)
- DIY Solutions®Trailer Wiring Harness (BAS00837)Trailer Wiring Harness (BAS00837) by DIY Solutions®. With 7 Pin Connector; with Factory Installed Tow Hitch. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$319.25$350.83Save $31.58 (9%)
- Standard®Trailer Brake System Connector (TC527)Trailer Brake System Connector by Standard®. 4 Blade Terminals Female Connector. Finish: Brown. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$40.65
- Standard®Trailer Brake System Connector (TC507)Trailer Brake System Connector by Standard®. 4 Cylindrical tube Terminals Female Connector. Finish: Black. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$34.31
- Standard®Trailer Connector Kit (TC457)Trailer Connector Kit (TC457) by Standard®. 7 Way RV to 4 Way. 8 Blade & Bullet Terminals Connector. Vehicle Connector Adaptor. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$11.49
- Standard®Trailer Connector Kit (TC441)Trailer Connector Kit (TC441) by Standard®. 4 Way. 4, 3 Blade, Pin Terminals Connector. Vehicle Connector. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$46.76
- Standard®Trailer Connector Kit (TC436)Trailer Connector Kit (TC436) by Standard®. 4 Way. Rectangular Shape. 6, 6, 4 Pin Terminals Connector. Vehicle Connector. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$54.15
- Standard®Trailer Connector Kit (TC416)Trailer Connector Kit (TC416) by Standard®. 4 Way. 8, 8, 4 Pin Terminals Connector. Vehicle Connector. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$36.12
- Standard®Trailer Connector Kit (TC498)Trailer Connector Kit (TC498) by Standard®. 4 Way. 4, 4 Pin Terminals Connector. Vehicle Connector. Includes 2 Connectors. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$74.46
- Standard®Trailer Connector Kit (TC554)Trailer Connector Kit (TC554) by Standard®. 7 Way RV to 4 Way. 18 Blade & Bullet Terminals Connector. Vehicle Connector Adaptor. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$108.20
- Standard®Trailer Connector Kit (TC494)Trailer Connector Kit (TC494) by Standard®. 4 Way. 4, 3, 1 Pin, Eye Ring Terminals Connector. Vehicle Connector. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$23.34
- Standard®Trailer Connector Kit (TC419)Trailer Connector Kit (TC419) by Standard®. 4 Way. Pin Terminal Connector. Vehicle Connector. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$51.95
- Standard®Trailer Connector Kit (TC555)Trailer Connector Kit (TC555) by Standard®. 6 Way to 4 Way. 6, 6, 4 Blade, Pin Terminals Connector. Vehicle Connector Adaptor. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$103.94
- Standard®Trailer Connector Kit (TC462)Trailer Connector Kit (TC462) by Standard®. 4 Way. 12 Blade, Pin Terminals Connector. Vehicle Connector. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$44.56
- Standard®Trailer Connector Kit (TC434)Trailer Connector Kit (TC434) by Standard®. 4 Way. 4, 1 Cylindrical Tube Terminals Connector. Converter. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$36.63
- Standard®Trailer Connector Kit (TC427)Trailer Connector Kit (TC427) by Standard®. 4 Way. 8 Bullet Terminals Connector. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$14.68
- Standard®Trailer Tow Relay Connector (S-2236)Trailer Tow Relay Connector by Standard®. 7 Terminals Female Connector. Finish: Black. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...Each part has high-quality direct replacement electrical connector eliminates the need for a harness replacing only the damaged connector, for a cost effective repair solutionThe terminal is manufactured with high grade materials such as copper alloy, brass, and phosphor bronze. The housing is fabricated using polyamide resins. All of the materials together provide the connectors with prolonged life and superior performance in harsh environments$29.04
- CURT®7-Way RV Blade LED Electrical Adapter (57003)7-Way RV Blade LED Electrical Adapter by CURT®. 7-Way Connects Tail. 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$28.75
So, you’ve got your trailer connected to your truck with the right hitch, ball mount and trailer ball. You’re ready to go, but what about your trailer lights? If the trailer connector doesn’t match the one on your tow vehicle, or if the vehicle doesn’t even have a plug, stick around. From basic exterior lights to 12-volt powered accessories, all trailers need electric power supplied by your vehicle, and we have everything needed to make a hassle-free connection including extensions, connectors, harnesses and adapters.
There are a number of standardized trailer connectors, such as 4-pin flat/round, 5-pin flat, 6-pin square/round, and 7-pin round. The simplest 4-pin system is used for small trailers, and has one ground pin, one pin each for left and right turn signals and brake lights, and one for the running lights. 5-pin flat connectors add a wire for the back-up lights. If the trailer is equipped with surge brakes, this circuit also disengages the brakes when the vehicle is backing up.
In addition to connections for turn signals, brake lights, tail lights and ground, 6-pin connectors have one terminal each for electric brakes and 12-volt accessories. 6-pin connectors come in square and round styles and are common to gooseneck and 5th wheel trailers, boat trailers and campers. 7-pin connectors are most commonly found on new vehicles that are prewired for towing. Along with the same functions as a 6-pin connector, this connector has a 7th circuit that is for the back-up lights. 7-pin connectors come with round or RV blade-style pins. Fortunately, no matter what connector you have on your trailer, we have the wiring harnesses that will let you plug into your vehicle’s electrical system.
The first thing you have to determine is whether your vehicle has a factory installed trailer towing package. If it does, you’ll find an electrical connector at the rear of the vehicle, usually on or near the bumper. If the shape and number of pins (wires) on the vehicle connector matches the one on your trailer, then all you’ll need is a wiring harness of sufficient length with the same connector at each end. If not, we can supply you with a plug-and-play adapter harness that will make all your trailer electrical functions work, without any cutting and splicing. For example, if your truck has a 7-pin round connector but your trailer has a 4-pin flat connector, one of our adapter harnesses will have you connected in minutes.
But don’t worry if your vehicle isn’t already set up for towing, we can still get you connected without much hassle. For most vehicles we offer a plug-and-play T-shaped harness (so called because it connects to both of your tail lights) that connects your vehicle lights to the trailer lights. If you have an obscure vehicle for which no T-shaped harness is available, we can still help, but some splicing will be necessary. And if your vehicle uses separate bulbs for the brake lights and turn signals but your trailer uses one bulb for both, we can supply you with a converter harness that will make the connection simple. We also have a large assortment of brackets, connectors, sockets, and anything else you need to get connected.
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Trailer Hitches
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Pintle Hitches
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5th Wheel Hitches
Gooseneck Hitches
Weight Distribution
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