Trailer Hitch Wiring & Electrical
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- Fastway®Retail 7-Way Plug Cover (82-00-3315)Universal Retail 7-Way Plug Cover (82-00-3315) by Fastway®. 1 Piece. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Revolutionary engineering, cutting-edge designExpected to provide maximum durability and value$7.76
- Tekonsha®7 Way Complete Tow Harness Kit (22551)Universal 7 Way Complete Tow Harness Kit by Tekonsha®. Packaged. One-year warranty. Includes ModuLite® HD Protector with Backup and Brake Control Harness. This top-grade product is expertly made in compliance with stringent industry...Allows for fully functional 7-Way (Tail Lights, Left/Right turn, Brake, Reverse, Electric Brakes and 12 Volt +)Short circuit and overload protection on all circuits including reverse$281.35
- Hopkins Towing®11' 7 RV Molded Connector (20048)Universal 11' 7 RV Molded Connector (20048) by Hopkins Towing®. Without 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$54.73
- Hopkins Towing®12" 4-Wire Flat Car End Connector with 3 Splices (48005)Universal 12" 4-Wire Flat Car End Connector with 3 Splices (48005) by Hopkins Towing®. Length: 12". 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,...Corrosion Resistant TerminalsMost Commonly Used Trailer Connector$2.98
- Hopkins Towing®12" 4-Wire Flat Trailer End Connector with 3 Splices (48105)Universal 12" 4-Wire Flat Trailer End Connector with 3 Splices (48105) by Hopkins Towing®. Length: 12". 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,...Corrosion Resistant TerminalsIncludes 3 splices$3.90
- Hopkins Towing®12" Car End / 12" Trailer End 4-Wire Flat Connector Set (48175)Universal 12" Car End / 12" Trailer End 4-Wire Flat Connector Set (48175) 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...Corrosion Resistant TerminalsMost Commonly Used Trailer Connector$4.89
- Hopkins Towing®12" Car End / 12" Trailer End 4-Wire Flat Connector Set with 6 Splices (48165)Universal 12" Car End / 12" Trailer End 4-Wire Flat Connector Set with 6 Splices (48165) 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...Corrosion Resistant TerminalsMost Commonly Used Trailer Connector$4.41
- Hopkins Towing®12" Endurance™ 4-Wire Flat Trailer End Connector (48110)Universal 12" Endurance™ 4-Wire Flat Trailer End Connector (48110) 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...Easy pull gripProtective wire sleeving$5.81
- Hopkins Towing®18" 5-Wire Flat Trailer End Connector (47915)Universal 18" 5-Wire Flat Trailer End Connector (47915) 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...For use with marine type trailers equipped with surge brakesShrouded blue wire$15.12
- Hopkins Towing®18" Endurance™ 5-Wire Flat Trailer End Connector (47910)Universal 18" Endurance™ 5-Wire Flat Trailer End Connector (47910) 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...5th wire provides back-up function on boat trailers releasing the surge brakesIndustry's Best, 3-Year Warranty. Maximum durability, superior ergonomics$12.20
- Hopkins Towing®20' 4-Wire Flat Trailer End Y-Harness (48245)Universal 20' 4-Wire Flat Trailer End Y-Harness (48245) 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...Wiring kit for maintaining or re-wiring your trailerWishbone design - allows 2 brown wires to be run to each taillight$17.75
- Hopkins Towing®24" Endurance™ Easy-Pull™ 4-Flat to 4-Flat Extension Wiring (47004)Universal 24" Endurance™ Easy-Pull™ 4-Flat to 4-Flat Extension Wiring (47004) 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...Endurance™ Professional GradeEasy-pull grips ease in connecting, disconnecting$12.25
- Hopkins Towing®25' 4-Wire Flat Trailer End Y-Harness (48255)Universal 25' 4-Wire Flat Trailer End Y-Harness (48255) 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...Wiring kit for maintaining or re-wiring your trailerWishbone design - allows 2 brown wires to be run to each taillight$17.40
- Hopkins Towing®3' 7 RV Molded Connector (20042)Universal 3' 7 RV Molded Connector (20042) 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....Heavy duty constructionWire is heavily insulated with jacketed wire sleeving$26.16
- Hopkins Towing®4' 7 RV Molded Connector (20043)Universal 4' 7 RV Molded Connector (20043) 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....Heavy duty constructionWire is heavily insulated with jacketed wire sleeving$31.09
- Hopkins Towing®4-Pole Round Car End Connector (48305)Universal 4-Pole Round Car End Connector (48305) by Hopkins Towing®. Standard. 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...Die-cast zinc for durabilityImpact and corrosion resistant$4.87
- Hopkins Towing®4-Pole Round Connector Kit (48285)Universal 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®48" 4-Wire Flat Car End Connector (48035)Universal 48" 4-Wire Flat Car End Connector (48035) 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...Corrosion Resistant TerminalsMost Commonly Used Trailer Connector$3.96
- Hopkins Towing®48" 4-Wire Flat Car End Connector with 3 Splices (48025)Universal 48" 4-Wire Flat Car End Connector with 3 Splices (48025) by Hopkins Towing®. Length: 48". 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,...Corrosion Resistant TerminalsIncludes 3 splices$3.91
- Hopkins Towing®48" 4-Wire Flat Trailer End Connector with 3 Splices (48125)Universal 48" 4-Wire Flat Trailer End Connector with 3 Splices (48125) by Hopkins Towing®. Length: 48". 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,...Corrosion Resistant TerminalsIncludes 3 splices$6.45
- Hopkins Towing®48" 5-Wire Flat Trailer End Connector (47905)Universal 48" 5-Wire Flat Trailer End Connector (47905) 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...For use with marine type trailers equipped with surge brakesShrouded blue wire$9.41
- Hopkins Towing®48" Car End / 12" Trailer End 4-Wire Flat Connector Set with 6 Splices (48205)Universal 48" Car End / 12" Trailer End 4-Wire Flat Connector Set with 6 Splices (48205) 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...Corrosion Resistant TerminalsMost Commonly Used Trailer Connector$5.06
- Hopkins Towing®48" Car End / 18" Trailer End 5-Wire Flat Connector Kit (47895)Universal 48" Car End / 18" Trailer End 5-Wire Flat Connector Kit (47895) 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...For use with marine type trailers equipped with surge brakesPrinted wire functions for easy wire reference$17.06
- Hopkins Towing®48" Endurance™ 4-Wire Flat Car End Connector (48030)Universal 48" Endurance™ 4-Wire Flat Car End Connector (48030) 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....Includes terminal grease and ground screwErgonomic grip for easier handling$8.39
- Hopkins Towing®48" Endurance™ 5-Wire Flat Car End Connector (47900)Universal 48" Endurance™ 5-Wire Flat Car End Connector (47900) 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....5th wire provides back-up function on boat trailers releasing the surge brakesIndustry's Best, 3-Year Warranty$16.63
- Hopkins Towing®48" LED Test 4-Flat Vehicle Side Connector (48055)Universal 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 Trailer End Connector (48385)Universal 5-Pole Round Trailer End Connector (48385) 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...Corrosion Resistant TerminalsDie-cast zinc connectors for durability$8.05
- Hopkins Towing®6' 7 Blade Connector with Jacketed Cable (20244)Universal 6' 7 Blade Connector with Jacketed Cable (20244) 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...Heavy duty constructionWire is heavily insulated with jacketed wire sleeving$38.92
- Hopkins Towing®6' 7 RV Molded Connector (20044)Universal 6' 7 RV Molded Connector (20044) by Hopkins Towing®. Without 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 with...Heavy duty constructionWire is heavily insulated with jacketed wire sleeving$36.31
- Hopkins Towing®6-Pole HD Round Connector Kit (52007)Universal 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
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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Weight Distribution
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