Trailer Hitch Wiring & Electrical
- Truck-Lite®50 Series 3 Plug Identification Wiring HarnessUniversal 50 Series 3 Plug Identification Wiring Harness by Truck-Lite®. 14 Gauge. PL-10, Blunt Cut. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and...Dimensions ''A'' indicate standard stocked length harnessA range of custom length harnesses are available in 12'' increments$21.79 - $53.75
- Truck-Lite®50 Series 3 Plug Marker Clearance and Stop/Turn/Tail Wiring Harness with Stop/Turn/Tail and Marker/Clearance BreakoutUniversal 50 Series 3 Plug Marker Clearance and Stop/Turn/Tail Wiring Harness with Stop/Turn/Tail and Marker/Clearance Breakout by Truck-Lite®. This product is made from high-grade materials to meet the strictest standards of high...Expertly crafted from superior materialsProvides exceptional reliability$47.40 - $83.42
- Truck-Lite®50 Series 3 Plug Stop/Turn/Tail and Back-Up Wiring Harness with Stop/Turn/Tail BreakoutUniversal 50 Series 3 Plug Stop/Turn/Tail and Back-Up Wiring Harness with Stop/Turn/Tail Breakout by Truck-Lite®. 14 Gauge. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...Dimensions ''A'' indicate standard stocked length harnessA range of custom length harnesses are available in 12'' increments$48.01 - $56.33
- Truck-Lite®50 Series Marker Clearance Wiring HarnessUniversal 50 Series Marker Clearance Wiring Harness by Truck-Lite®. 14 Gauge. 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...Expertly crafted from superior materialsProvides exceptional reliability$16.63 - $74.28
- Truck-Lite®50 Series Stop/Turn/Tail Wiring HarnessUniversal 50 Series Stop/Turn/Tail Wiring Harness by Truck-Lite®. 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....Expertly crafted from superior materialsProvides exceptional reliability$35.64 - $95.34
- Truck-Lite®50 Series Turn Signal Wiring HarnessUniversal 50 Series Turn Signal Wiring Harness by Truck-Lite®. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this Truck-Lite...Expertly crafted from superior materialsProvides exceptional reliability$36.35 - $50.67
- Truck-Lite®88 Series ABS Wiring HarnessUniversal 88 Series ABS Wiring Harness by Truck-Lite®. Packard Connector 12124587, 0.180 Bullet. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention...$78.70 - $259.10
- Truck-Lite®Identification Wiring HarnessUniversal Identification Wiring Harness by Truck-Lite®. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this Truck-Lite product...$13.87 - $28.27
- Truck-Lite®Marker Clearance Wiring HarnessUniversal Marker Clearance Wiring Harness by Truck-Lite®. 14 Gauge. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this Truck-Lite...Dimensions ''A'' indicate standard stocked length harnessCustom length available in 12'' increments.$6.62 - $22.34
- Truck-Lite®Marker Clearance and Identification Wiring HarnessUniversal Marker Clearance and Identification Wiring Harness by Truck-Lite®. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this...$12.41 - $19.39
- Truck-Lite®Signal-Stat 1 Plug ConnectorUniversal Signal-Stat 1 Plug Connector by Truck-Lite®. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this Truck-Lite product...Expertly crafted from superior materialsProvides exceptional reliability$13.53 - $19.71
- Truck-Lite®Super 50 Conductor Compression FittingUniversal Super 50 Conductor Compression Fitting by Truck-Lite®. 3-part fitting consisting of a pre-tapped cap, threaded base and black PVC grommet that is available with 6 different hole sizes to accommodate various conductor cables....Expertly crafted from superior materialsProvides exceptional reliability$7.25 - $9.31
- Battery Doctor®4-Way Trailer End ConnectorUniversal 4-Way Trailer End Connector by Battery Doctor®. 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...Wishbone design for superior trailer harnessStandard RVI color code$9.88 - $15.70
- Battery Doctor®7-Way Trailer Plug CoverUniversal 7-Way Trailer Plug Cover by Battery Doctor®. 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...Prevents Bugs, Dirt, and Water from Damaging Trailer PlugAttaches to Trailer Plug for Convenience and Ease of Use$4.39 - $86.60
- Battery Doctor®Flat Complete Trailer ConnectorUniversal Flat Complete Trailer Connector by Battery Doctor®. 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....Male and Female EndsColor Coded 18 Gauge Wires$13.39 - $16.25
- FulTyme RV®4 Pole Trailer ConnectorUniversal 4 Pole Trailer Connector by FulTyme RV®. 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...Ideal to make trailer towing safer and easierMade from the highest-quality materials to last for years to come$7.51 - $13.42
- FulTyme RV®4-Way Flat ConnectorUniversal 4-Way Flat Connector by FulTyme RV®. Industry standard connector used for most light-duty trailers where electric brakes or other additional power demands are not require. Manufactured from industry-leading materials using...18 Ga. Bonded WireTin Plated .187 Terminals for Improved Current Capacity and Corrosion Resistance$7.51 - $13.42
- FulTyme RV®5-Way Flat ConnectorUniversal 5-Way Flat Connector by FulTyme RV®. Industry standard connectors used for light duty where an auxiliary circuit is required for surge brake lockout or back-up lamp functionality. Manufactured from industry-leading materials...Flexible Molded PVC ConnectorsMax Load 7.5 Amp$11.48 - $12.51
- FulTyme RV®7-Way Round ConnectorUniversal 7-Way Round Connector by FulTyme RV®. Connects auxiliary, tail lights, ground, left, right and stop. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced...Ideal to make trailer towing safer and easierMade from the highest-quality materials to last for years to come$11.15 - $18.03
- FulTyme RV®Flat Connector CoverUniversal Flat Connector Cover by FulTyme RV®. Keeps connector clean. Built-in tether retains cover when not in use. Helps to prevent rust and corrosion. Manufactured black PVC rubber. Manufactured from industry-leading materials using...Ideal to make trailer towing safer and easierMade from the highest-quality materials to last for years to come$1.70 - $6.66
- FulTyme RV®Flat Mounting BracketUniversal Flat Mounting Bracket by FulTyme RV®. 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...Mounts wiring connectors to rear of tow vehicleConvenient "Push-In" connector mounting$3.45 - $6.98
- RV Designer®4-Way Trailer Connector SocketUniversal 4-Way Trailer Connector Socket by RV Designer®. 1 Piece. RV Designer is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for your needs....Created by professionals to meet your requirementsManufactured with cutting-edge technology$7.46 - $11.01
- RV Designer®7-Way Trailer Connector PlugUniversal 7-Way Trailer Connector Plug by RV Designer®. 1 Piece. RV Designer is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for your needs....Created by professionals to meet your requirementsManufactured with cutting-edge technology$10.71 - $13.25
- RV Designer®7-Way Trailer Connector SocketUniversal 7-Way Trailer Connector Socket by RV Designer®. 1 Piece. RV Designer is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for your needs....Created by professionals to meet your requirementsManufactured with cutting-edge technology$12.83 - $17.25
- RV Designer®7-Way to 6-Way Round Trailer Connector Adapter7-Way to 6-Way Round Trailer Connector Adapter by RV Designer®. 1 Piece. RV Designer is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for your...Created by professionals to meet your requirementsManufactured with cutting-edge technology$11.27 - $15.19
- RV Designer®Heavy Duty 7-Way Socket with Solid PinsUniversal Heavy Duty 7-Way Socket with Solid Pins by RV Designer®. 1 Piece. RV Designer is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for...Created by professionals to meet your requirementsManufactured with cutting-edge technology$13.70 - $16.89
- RV Designer®Trailer Connector AdapterTrailer Connector Adapter by RV Designer®. 1 Piece. RV Designer is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for your needs. All products...Created by professionals to meet your requirementsManufactured with cutting-edge technology$11.24 - $19.02
- RV Designer®Trailer Connector PlugUniversal Trailer Connector Plug by RV Designer®. 1 Piece. RV Designer is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for your needs. All...Created by professionals to meet your requirementsManufactured with cutting-edge technology$5.61 - $13.95
- RV Pigtails®Pigtail Wiring Connector AdapterUniversal Pigtail Wiring Connector Adapter by RV Pigtails®. Base Color: Black. 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...Designed to meet the highest quality standardsBuilt to offer superior performance for a long time$18.56 - $70.02
- Standard®Handypack™ 4-Pole Round Trailer ConnectorUniversal Handypack™ 4-Pole Round Trailer Connector by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation...High quality at an affordable priceExpertly made from premium materials$3.92 - $5.32
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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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