Trailer Hitch Wiring & Electrical
- Husky Towing®Tail Light ConverterUniversal Tail Light Converter by Husky Towing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Limited 1 Year WarrantyPerfect blend of leading innovations and superior workmanship$20.35 - $112.47
- Husky Towing®Towed Vehicle Wiring KitUniversal Towed Vehicle Wiring Kit by Husky Towing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Limited 1 Year WarrantyPerfect blend of leading innovations and superior workmanship$38.00 - $45.60
- Husky Towing®Trailer Wiring Connector AdapterUniversal Trailer Wiring Connector Adapter by Husky Towing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$9.04 - $77.71
- Husky Towing®Trailer Wiring Connector ExtensionUniversal Trailer Wiring Connector Extension by Husky Towing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$2.34 - $18.90
- Husky Towing®Trailer Wiring Connector Mounting BracketUniversal Trailer Wiring Connector Mounting Bracket by Husky Towing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Limited 1 Year WarrantyPerfect blend of leading innovations and superior workmanship$4.54 - $10.52
- Hopkins Towing®12-Volt Power SocketUniversal 12-Volt Power Socket by Hopkins Towing®. When attaching a trailer to your vehicle, a premium quality wiring kit or harness is a vital necessity. An automotive trailer must have a reliable connection with the signaling system...Splice onto tow vehicle's wiring systemCorrosion resistant terminals$15.06 - $23.14
- 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$4.57 - $6.79
- Hopkins Towing®4-Pole Round Heavy-Duty ConnectorUniversal 4-Pole Round Heavy-Duty Connector by Hopkins Towing®. Heavy-duty. 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...Multi-Tow™ provides multiple towing options from one connectorPlug-In Simple Wiring Kit$7.99 - $10.04
- Hopkins Towing®4-Wire Bonded Wire SpoolUniversal 4-Wire Bonded Wire Spool by Hopkins Towing®. When attaching a trailer to your vehicle, a premium quality wiring kit or harness is a vital necessity. An automotive trailer must have a reliable connection with the signaling...Splice onto tow vehicle's wiring systemCorrosion resistant terminals$15.20 - $88.90
- 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$1.70 - $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$4.16 - $5.71
- 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$4.15 - $4.76
- 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$2.79 - $7.58
- Hopkins Towing®4-Wire Flat MountUniversal 4-Wire Flat Mount by Hopkins Towing®. When attaching a trailer to your vehicle, a premium quality wiring kit or harness is a vital necessity. An automotive trailer must have a reliable connection with the signaling system of...Splice onto tow vehicle's wiring systemCorrosion resistant terminals$7.18 - $9.50
- 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$16.25 - $18.86
- 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$8.85 - $17.06
- 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$3.76 - $16.12
- Hopkins Towing®7 Blade Connector with Jacketed CableUniversal 7 Blade Connector with Jacketed Cable by Hopkins Towing®. With Cardboard Wrap Package. To ensure a secure and reliable connection and consolidate all of the electrical towing functions of your trailer into a single plug, go...Heavy duty constructionWire is heavily insulated with jacketed wire sleeving$38.92 - $46.37
- Hopkins Towing®7 RV Blade ConnectorUniversal 7 RV Blade 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$7.96 - $14.07
- Hopkins Towing®7 RV Molded ConnectorUniversal 7 RV Molded Connector by Hopkins Towing®. To ensure a secure and reliable connection and consolidate all of the electrical towing functions of your trailer into a single plug, go with this great add-on by Hopkins. Typically...Heavy duty constructionWire is heavily insulated with jacketed wire sleeving$26.16 - $54.73
- Hopkins Towing®7-Pole Round ConnectorUniversal 7-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$14.25 - $18.91
- Hopkins Towing®Endurance Flex-Coil Nite-Glow™ AdapterUniversal Endurance Flex-Coil Nite-Glow™ Adapter by Hopkins Towing®. When attaching a trailer to your vehicle, a premium quality wiring kit or harness is a vital necessity. An automotive trailer must have a reliable connection with...Nite-Glow™ illuminates on taillight function verifying continuityStretches to 8 feet$52.82 - $61.25
- Hopkins Towing®Endurance Flex-Coil™ 7 RV Blade AdapterUniversal Endurance Flex-Coil™ 7 RV Blade Adapter by Hopkins Towing®. When attaching a trailer to your vehicle, a premium quality wiring kit or harness is a vital necessity. An automotive trailer must have a reliable connection with...Splice onto tow vehicle's wiring systemCorrosion resistant terminals$38.92 - $84.95
- Hopkins Towing®Endurance Quick-Fix™ 4-Wire Flat ConnectorUniversal Endurance Quick-Fix™ 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...LED test lights confirm electrical continuityErgonomic grip for easier handling$8.20 - $11.51
- Hopkins Towing®Endurance™ 4-Wire Flat ConnectorUniversal Endurance™ 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,...Ensure a perfect, weather-tight fitBuilt of durable materials to last$5.81 - $8.39
- Hopkins Towing®Endurance™ 5-Wire Flat ConnectorUniversal Endurance™ 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,...Ensure a perfect, weather-tight fitBuilt of durable materials to last$12.20 - $16.63
- Hopkins Towing®Endurance™ 6-Pole Round ConnectorUniversal Endurance™ 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,...Ensure a perfect, weather-tight fitBuilt of durable materials to last$11.89 - $17.57
- Hopkins Towing®Endurance™ 7 RV Blade ConnectorUniversal Endurance™ 7 RV Blade 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,...Ensure a perfect, weather-tight fitBuilt of durable materials to last$12.96 - $19.53
- Hopkins Towing®Endurance™ Easy-Pull™ 4 Flat ExtensionUniversal Endurance™ Easy-Pull™ 4 Flat Extension by Hopkins Towing®. Without LED Tester. When attaching a trailer to your vehicle, a premium quality wiring kit or harness is a vital necessity. An automotive trailer must have a...Endurance™ Professional GradeEasy-pull grips ease in connecting, disconnecting$12.86 - $17.78
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.
Featured Brands
Related Categories
- Trailer Hitches
- Hitch Balls & Mounts
- Brake Controllers
- Pintle Hitches
- Hitch Accessories
- 5th Wheel Hitches
- Gooseneck Hitches
- Weight Distribution
- Sway Control
- Front Hitches
- Tow Bars
- Trailer Couplers
- Trailer Brakes
- Trailer Breakaway Kit
- Hitch Cargo Carriers
- Hitch Covers
- Hitch Steps
- Straps & Tie Downs
- Trailers
- Trailer Jacks
- Trailer Winches
- Trailer Tool Boxes
- Trailer Accessories
- Tow Lights