Semi Truck Hitch Wiring
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- Truck-Lite®Super 50 0.45"x0.21" PVC 4 Conductor Compression Fitting (50847)Universal Super 50 0.45"x0.21" PVC 4 Conductor Compression Fitting (50847) 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...Expertly crafted from superior materialsProvides exceptional reliability$7.25
- Truck-Lite®Super 50 0.485" PVC 4 to 5 Conductor Compression Fitting (50841)Universal Super 50 0.485" PVC 4 to 5 Conductor Compression Fitting (50841) 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...Expertly crafted from superior materialsProvides exceptional reliability$9.31
- Truck-Lite®Super 50 0.709" PVC 6 to 7 Conductor Compression Fitting (50842)Universal Super 50 0.709" PVC 6 to 7 Conductor Compression Fitting (50842) 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...Expertly crafted from superior materialsProvides exceptional reliability$9.31
- Tectran®Standard Duty PowercoilUniversal Standard Duty Powercoil by Tectran®. 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...Recommended for standard single-trailer configurations that are not ABS equippedExtremely flexible, with excellent coil memory, even in brutally cold conditions as low as -85°F (-65°C)$98.05 - $124.02
- NSA RV Products®De-FuserUniversal De-Fuser by NSA RV Products®. Tired of reaching down way under the dash to pull fuses? End that back pain with the De-Fuser! With this easy to install remote switch and fuse assembly you'll only need to flip a switch prior to...Made in USAWill help you efficiently tow your vehicle behind your motor home$37.00 - $45.00
- Peterson®Trailer ConnectorUniversal Trailer Connector by Peterson®. Std. Carton 6. Packaging Type: Viz Pack. 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...Built to deliver excellent performance and functionalityWill serve you for as long as possible$15.88 - $17.22
- Phillips Industries®4-Way SocketUniversal 4-Way Socket by Phillips Industries®. 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...Heavy duty, zinc die-cast housing for durabilityElongated holes for mounting adaptability$14.35
- Phillips Industries®6-Way SocketUniversal 6-Way Socket by Phillips Industries®. 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...Heavy duty, zinc die-cast housing for durabilityElongated holes for mounting adaptability$15.67
- Phillips Industries®7-Way SocketUniversal 7-Way Socket by Phillips Industries®. 2-hole, wire insertion split pin. 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...Heavy duty, reinforced zinc die-cast housingThread sealed screws prevent wire pull-out$18.95
- Phillips Industries®Sta-Dry™ Light Duty Cable with Thermosealed™ PlugsUniversal Sta-Dry™ Light Duty Cable with Thermosealed™ Plugs by Phillips Industries®. Length: 12'. AWG: 16 gauge wires. Working length - As measured by pull force per SAE J2222. Length of actual cable is significantly longer. This...For light-duty towing applications such as boats and utility trailersPlugs are molded for moisture and corrosion resistance$65.07 - $80.61
- Truck-Lite®40804 Series 72" 2 Plug Turn Signal Wiring HarnessUniversal 40804 Series 72" 2 Plug Turn Signal Wiring Harness by Truck-Lite®. 14 Gauge. Straight PL-2, Ring Terminal. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the...Expertly crafted from superior materialsProvides exceptional reliability$24.94
- Truck-Lite®50 Series 4 Plug Identification and License Wiring HarnessUniversal 50 Series 4 Plug Identification and License 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...Dimension ''A'' indicate standard stocked length harnessA range of custom length harnesses are available in 12'' increments$27.04 - $51.98
- Truck-Lite®50 Series Main Cable Wiring HarnessUniversal 50 Series Main Cable Wiring Harness by Truck-Lite®. Ring Terminal, Ring Terminal. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to...Dimensions ''A'' indicate standard stocked length harnessA range of custom length harnesses are available in 12'' increments$133.63 - $232.91
- Truck-Lite®7 Conductor Trailer CordUniversal 7 Conductor Trailer Cord by Truck-Lite®. Female 7 Pole. 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...$164.85 - $228.17
- Truck-Lite®88 Series 55" Rear License and Turn Signal Wiring Harness with Stop/Turn/Tail and Marker/Clearance and Auxiliary and Tail BreakoutUniversal 88 Series 55" Rear License and Turn Signal Wiring Harness with Stop/Turn/Tail and Marker/Clearance and Auxiliary and Tail Breakout by Truck-Lite®. 14 Gauge. Male 6 Pole Plug, Right Angle PL-3, Female 0.180 Bullet. This product...Expertly crafted from superior materialsProvides exceptional reliability$127.89 - $134.63
- Truck-Lite®88 Series 56" Lower Identification and License Wiring HarnessUniversal 88 Series 56" Lower Identification and License 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...Dimensions ''A'' indicate standard stocked length harnessCustom length available in 12'' increments.$29.39 - $31.39
- Truck-Lite®Marker Clearance StringUniversal Marker Clearance String 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. Manufactured from...Expertly crafted from superior materialsProvides exceptional reliability$17.00 - $47.50
- Truck-Lite®Signal-Stat Power SupplyUniversal Signal-Stat Power Supply 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 ensures...Flash patterns comply with SAE J1318 requirements for on-time/off-time6602PS/6606PS supply remote strobe heads with 80 quad flashes per minute$145.84 - $339.48
- Truck-Lite®Snow Plow ATL Wiring HarnessUniversal Snow Plow ATL 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...$79.29 - $122.21
- United Pacific®Trailer Light ConverterUniversal Trailer Light Converter by United Pacific®. 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...Expertly crafted from premium materialsDesigned to match rigorous quality standards$9.31 - $14.25
- Tectran®6-Way Sockets Socket Boot (670-622)Universal 6-Way Sockets Socket Boot (670-622) by Tectran®. 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...Now Featuring Buffalo Plug & Bull Nose Socket DesignBuilt to offer superior performance for a long time$5.53
- Tectran®7-Way Bull Nose Poly Circuit Breaker Socket with Breakers (670P7230)Universal 7-Way Bull Nose Poly Circuit Breaker Socket with Breakers (670P7230) by Tectran®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high...Machined brass terminal pins for maximum current carrying abilityField repairable with standard tools$54.95
- Tectran®7-Way Medium Duty Bronze Powercoil (7MTY542MG)Universal 7-Way Medium Duty Bronze Powercoil (7MTY542MG) by Tectran®. Length: 15'. Lead Length: 48" X 12". A unique cable configuration that utilizes 12-gauge conductors for the heavily loaded stop lamp (red) and ground (white) circuits...Extremely flexible with excellent coil memory, even in brutally cold conditions as low as -85°F (-65°C)High strand count copper conductors with machine crimped brass terminals for dependable electrical connections$109.56
- Tectran®7-Way Medium Duty Bronze Powercoil (7MTY222MG)Universal 7-Way Medium Duty Bronze Powercoil (7MTY222MG) by Tectran®. Length: 12'. Lead Length: 12" X 12". A unique cable configuration that utilizes 12-gauge conductors for the heavily loaded stop lamp (red) and ground (white) circuits...Extremely flexible with excellent coil memory, even in brutally cold conditions as low as -85°F (-65°C)High strand count copper conductors with machine crimped brass terminals for dependable electrical connections$74.81
- Tectran®7-Way SAE Auxiliary Poly Socket with Poly Housing (680P-75)Universal 7-Way SAE Auxiliary Poly Socket with Poly Housing (680P-75) by Tectran®. For Secondary Cables. Bullet Terminals - Split Pin. This top-grade product is expertly made in compliance with stringent industry standards to offer a...Meets auxiliary connector performance requirements of SAE J560 (replaces ISO 3731)For use with secondary cable for auxiliary power requirements$27.88
- Tectran®7-Way SAE Auxiliary Poly Socket with Ring Terminals (680P74)Universal 7-Way SAE Auxiliary Poly Socket with Ring Terminals (680P74) by Tectran®. For Secondary Cables. With ring terminals - Split Pin. This top-grade product is expertly made in compliance with stringent industry standards to offer...Meets auxiliary connector performance requirements of SAE J560 (replaces ISO 3731)For use with secondary cable for auxiliary power requirements$29.43
- Tectran®7-Way SAE Bull Nose Socket Assembly with Locking Clip (670-75L)Universal 7-Way SAE Bull Nose Socket Assembly with Locking Clip (670-75L) by Tectran®. Terminals Type: Bullet. Pin Type: Split. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of...Durable, zinc, die cast housing for rugged useMeets all performance requirements of SAE J560$49.97
- Tectran®DOUBLEDUAL™ Powercoil (7DDB222MW)Universal DOUBLEDUAL™ Powercoil (7DDB222MW) by Tectran®. Length: 12'. AN INDUSTRY FIRST - TECTRAN'S ONE-PLUG SOLUTION! A dual pole plug that is universally configured to function with both vertical and horizontal socket designs. One...Rugged jacket resistant to abrasion, gasoline, diesel, and road chemicalsDurable Die-cast Buffalo plugs$189.61
- Tectran®Dual Pole Buffalo Plug and Bull Nose Sockets Plug Assembly with Spring Guard (670-19SG)Universal Dual Pole Buffalo Plug and Bull Nose Sockets Plug Assembly with Spring Guard (670-19SG) by Tectran®. Screw Termination. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion...Polarized Contacts200 amp capacity$23.33
- Tectran®Electrical Adapter (79167)Universal Electrical Adapter (79167) by Tectran®. 6-Way Plugs to 7-Way Sockets. 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...Built to offer superior performance for a long timeMade to bring exceptional durability and reliability$60.62
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.