Trailer Parts Superstore - Trailer Wiring, Plugs & Sockets

TRAILER WIRING, PLUGS & SOCKETS

Trailer wiring and harness plugs are available in a variety of sizes and configurations. The most basic of designs is the color coded 4-WIRE system which uses a brown wire for tail, license, and side marker lights, yellow wire for left hand stop and turn, green wire for right hand stop and turn, and white wire for system ground. The "Flat-4" harness plug is found on almost all boat trailers and many smaller utility trailers that do not have brakes.

5-WIRE systems provide all the color coded functions of the 4-pole systems plus an additional blue wire which may be used for Hydraulic disc brakes or auxiliary lights.

6-WIRE systems provide all the color-coded functions of the 4-pole systems plus two additional poles for 12-volt feed (red wire) and suppl (blue wire) to Electric brake systems.

7-WIRE systems provide all the color-coded functions of the 6-pole systems plus an additional pole for interior/exterior lighting. 7-wire systems are most commonly found on RV & Cargo trailers.

Tail Light Converters are necessary for adapting import and domestic vehicles with separate turn and stop lights (3-wire system) to standard trailer tail light wiring (2-wire system). Always consult the vehicle owner's manual when considering trailer wiring.

Click here to see a 4-pole system color coded trailer wiring diagram

Quantity	Description	Price
	Dielectric Waterproof Connector Grease #11755 Stock# 5135035 Dielectric grease protects electrical connections and wiring from moisture, salt, dirt and corrosion. 2 oz. tube	$4.99
	100' Spool 4-Way 16/18 Gauge Bonded Trailer Wire #49955 Stock# 5177122 100' spool of color coded (Green / Yellow / Brown / White) 4-Way 16/18 gauge bonded trailer wire.	$34.95
	4-Wire x 25' Split Trailer Harness Kit #V5425Y Stock# 5005198 25' split four conductor harness & flat 4-pole trunk connector.	$16.99
	5-Wire x 25' Split Trailer Harness Kit #V5525Y Stock# 5005031 25' split five-conductor harness & flat 5-pole trunk connector.	$19.95
	Flat 4-Prong Trailer Connector Plug #V5400A Stock# 5005089 Replacement flat 4-pole trailer plug with 12" color-coded lead wires.	$4.15
	Flat 4-Prong Trunk Connector Plug #V5400B Stock# 5005090 Tow Vehicle flat 4-pole trunk connector with 12" color-coded lead wires.	$5.35
	Flat 4-Prong Vehicle Knockout Connector #48065 Stock# 5177055 Tow Vehicle flat 4-pole connector mounts in 1-1/4" round opening.	$8.99
	Flat 4-Prong Vehicle Knockout Adapter #47605 Stock# 5177053 Adapts existing 4-pole harness to mount in 1-1/4" round opening.	$8.99
	Flat 4-Prong Universal Wiring Kit #46105 Stock# 5177011 Includes: 36" trunk connector, line splices, test light & terminal grease. SUPPLIES LIMITED	$13.29
	Flat 4-Prong 48" Wiring Extension #47115 Stock# 5177024 Extends wiring system 48" for more flexibility in electrical hook-up.	$8.95
	Flat 4-Prong Tail Light Converter #V5410 Stock# 5005005 For use when tow vehicle has a separate turn signal & brake bulb.	$16.99
	Round 4-Pole Truck & Trailer Connector Set #5404 Stock# 5005023 Heavy-duty connectors provide more durability than molded vinyl plugs.	$11.25
	Flat 5-Plug Trailer Connector Plug #V5500A Stock# 5005027 5-prong used for Hydraulic disc brakes or auxiliary lighting applications.	$6.49
	Flat 5-Plug Trunk Connector Plug #V5500B Stock# 5005028 5-prong used for Hydraulic disc brakes or auxiliary lighting applications.	$7.49
	Square 6-Plug Trunk Connector Set #47995 Stock# 5177061 6-prong connector set used for brakes or auxiliary lighting applications.	$4.99
	Round 6-Pole Trailer End Connector #48445 Stock# 5177030 Provides additional circuits for electric brakes or auxiliary power lead.	$6.49
	Round 6-Pole Trailer End Electric Plug & 6' Cable Stock# 5177087 Provides additional circuits for electric brakes or auxiliary power lead. 6-pole plug comes pre-wired with 6-strand color-coded trailer wire.	$19.29
	Round 6-Pole Trailer End Electric Plug & 11' Cable Stock# 5177088 Provides additional circuits for electric brakes or auxiliary power lead. 6-pole plug comes pre-wired with 6-strand color-coded trailer wire.	$26.50
	Round 6-Pole Vehicle End Plastic Socket #48425 Stock# 5177013 Socket provides necessary circuits for electric brake systems or auxiliary lights.	$8.29
	Round 6-Pole Vehicle End Metal Socket #18036 Stock# 5223230 Socket provides necessary circuits for electric brake systems or auxiliary lights.	$12.99
	6-Pin Coiled Nite-Glow Extension Harness #47055 Stock# 5177098 Flex-Coil Nite-Glow™ 6-wire harness adapter stretches up to 8' long. Includes two 6-pin round female plugs. Great for RVing.	$49.95
	7-Pole RV Blade Trailer End Plug #48505 Stock# 5177029 Commonly found on larger trailers with brakes and auxiliary lighting.	$9.95
	7-Pole RV Blade Trailer End Plug & 3' Cable Stock# 5177089 Commonly found on larger trailers with brakes and auxiliary lighting. 7-pole plug comes pre-wired with 7-strand color-coded trailer wire.	$15.50
	7-Pole RV Blade Trailer End Plug & 6' Cable Stock# 5177090 Commonly found on larger trailers with brakes and auxiliary lighting. 7-pole plug comes pre-wired with 7-strand color-coded trailer wire.	$23.50
	7-Pole RV Blade Trailer End Plug & 11' Cable Stock# 5177091 Commonly found on larger trailers with brakes and auxiliary lighting. 7-pole plug comes pre-wired with 7-strand color-coded trailer wire.	$33.50
	7-Pole RV Blade Vehicle End Socket #48485 Stock# 5177007 Commonly found on larger trailers with brakes and auxiliary lighting.	$9.95
	7-Pole Vehicle to 7-Pole Trailer Extension Cable - 7' #118664 Stock# 5223024 7-Pole vehicle end to 7-pole trailer end extension cable allows for easy hook-up of 5th wheel and gooseneck trailers - 7'	$44.95
	7-Pole Trailer Wiring Harness Kit - 4' Cable #20224 Stock# 5223026 7-Pole U.S. car pre-wired 4' cable allows remote trailer wiring in pickup beds or other hard to access areas when towing 5th wheel or gooseneck trailers.	$59.95
	Fifth Wheel or Gooseneck Wiring Harness, #5197410 Stock# 5223284 BARGMAN 90� Fifth Wheel or Gooseneck wiring harnesses with 9 ft length and 7-way connector. Fits Chevy, GMC and Ford	$67.50
	Fifth Wheel or Gooseneck Wiring Harness, #5197411 Stock# 5223285 BARGMAN 90� Fifth Wheel or Gooseneck wiring harnesses with 9 ft length and 7-way connector. Fits full size Dodge pick-ups	$59.95
	Universal DOT Truck & Trailer Wire Harness #5609000 Stock# 1326401 The universal DOT truck and trailer wire harness has nine prewired snap-in plugs for two and three prong lights and two blunt cut ends for optional end markers.	$89.95
	4-Way Flat Connector Mounting Bracket #18144 Stock# 5223194 "L-Bracket" designed to securely hold flat-4 trunk connector under vehicle.	$6.59
	4, 5 & 6-Way Trunk Connector Bracket #18137 Stock# 5223192 "L-Bracket" designed to hold 4, 5 & 6-way round trunk connectors.	$8.99
	7-Way Round Trunk Connector Mounting Bracket #118138 Stock# 5223193 "L-Bracket" designed to securely hold 7-way round trunk connectors.	$8.99
	4-Flat Connector Storage Box #18145 Stock# 5223016 Neatly stores 4-flat connector, easily installs with cable ties or screws.	$7.69
	6 & 7-Way Connector Mounting Box #18156 Stock# 5223203 Box mounts to hitches with 2-1/2" square cross tubes to hold sockets.	$11.99
	6 & 7-Way Connector Mounting Box #18159 Stock# 5223246 Universal fit box mounts to hitches with round & square cross tubes to hold sockets.	$11.99
	4, 5, & 6-Pole Trunk Connector Bracket #48605 Stock# 5177067 Heavy-duty "L-Bracket" mounts underneath vehicle to hold sockets.	$4.69
	Marker Light 2-Pole Plug #142-49 Stock# 5005131 Peterson mfg. 2-way molded plug for use 142, 143, 146, 150 series marker lights.	$2.45
	Peterson 2-Wire Right Angle Plug #421-49 Stock# 5005056 Peterson mfg. marker light plug fits: 415, 416, 421-A, 426-A series lights. SUPPLIES LIMITED	$1.99
	Tail Light 3-pole Harness Plug #431-491 Stock# 5005139 Peterson mfg. 3-way molded plug for use with #421 series flush mount taillights.	$3.19
	Peterson Molded Harness Plug #152-49 Stock# 5005054 Peterson mfg. molded plug & wire to fit the 152 series sealed lights. SUPPLIES LIMITED	$1.99
	Wire Harness - 3 Light Rear ID #150-49 Stock# 5005053 Peterson mfg. sealed wire harness for 3 light rear ID bars model# 150-3R, 150-3A.	$6.99
	Peterson Light Lead Wire #153-49 Stock# 5005055 Peterson mfg. replacement lead wire for the 154 series sealed marker lights. SUPPLIES LIMITED	$1.99
	OPTRONICS Marker Light Inline 2-Pole Plug Stock# 1294151 OPTRONICS A-46PB Inline 2-way molded plug for use with marker / clearance lights. Includes 6" black/white wire lead.	$3.29
	OPTRONICS Marker Light Offset 2-Pole Plug Stock# 1294152 OPTRONICS A-49PB Offset 2-way molded plug for use with marker / clearance lights. Includes 6" red/white wire lead.	$3.79
	OPTRONICS Tail Light Straight 3-Pole Plug Stock# 1294153 OPTRONICS A-45PB Straight 3-way molded plug for use with tail lights. Includes 10" red/black/white wire lead.	$3.29
	OPTRONICS Tail Light Right-Angle 3-Pole Plug Stock# 1294154 OPTRONICS A-47PB Right-Angle 3-way molded plug for use with tail lights. Includes 10" red/black/white wire lead.	$3.89
	OPTRONICS Marker Light 1-Pole Plug, A65P Stock# 1294155 OPTRONICS A65P Inline 1-pole molded plug for use with marker / clearance lights. Includes 6" black wire lead.	$3.69
	TRUCK-LITE Marker Light 2-Pole Plug #94902 Stock# 1569016 TRUCK-LITE # 94902 2-way molded plug for use with marker / clearance lights. Includes 6" black/white wire lead.	$2.39
	TRUCK-LITE 8" Fit 'N Forget Stop/Turn Adapter Plug Stock# 1569173 TRUCK-LITE # 94789 LED Fit 'N Forget stop/turn adapter plug keeps water salt and corrosives from LED lamps. Used to adapt LED lamps to conventional plug harnesses. SUPPLIES LIMITED	$3.99
	TRUCK-LITE Fit 'N Forget Rear Sidemarker Plug Stock# 1569176 TRUCK-LITE # 95034 LED Fit 'N Forget rear sidemarker plug w/LLV Packard connectors keeps water, salt and corrosives from LED lamps. SUPPLIES LIMITED	$4.59
	TRUCK-LITE Fit 'N Forget CHMSL Plug #95033 Stock# 1569175 TRUCK-LITE # 95033 LED Fit 'N Forget CHMSL plug w/LLV Packard connectors keeps water, salt and corrosives from LED lamps. SUPPLIES LIMITED	$6.59
	TRUCK-LITE 8" Fit 'N Forget Stop/Turn/Tail Plug #94707 Stock# 1569172 TRUCK-LITE # 94707 LED Fit 'N Forget stop/turn/tail plug keeps water salt and corrosives from LED lamps. Features 8 inch 16 gauge GPT wire.	$3.39
	TRUCK-LITE 8" Fit 'N Forget Stop/Turn Plug # 94759 Stock# 1569174 TRUCK-LITE # 94759 LED Fit 'N Forget stop/turn plug with # 6 ground terminal keeps water salt and corrosives from LED lamps.	$6.25
	TRUCK-LITE Fit 'N Forget Stop/Turn/Tail Adapter Stock# 1569171 TRUCK-LITE # 94706 LED Fit 'N Forget stop/turn/tail adapter plug converts one stop/turn/tail plug into one LED Fit 'N Forget stop/turn tail plug.	$4.99
	TRUCK-LITE 4" LED Fit 'N Forget M/C Adapter Plug #93745 Stock# 1569179 TRUCK-LITE # 93745 LED Fit 'N Forget marker/clearance adapter plug is used to adapt LED lamps to conventional plug harness systems. Features 4" 16 gauge GPT wire.	$4.25
	TRUCK-LITE 6" Right Angle Marker Plug #94964 Stock# 1569180 TRUCK-LITE # 94964 right angle marker/clearance plug is designed for use in limited space areas. Features 6" 16 gauge GPT wire.	$2.99
	TRUCK-LITE 3-Pin Straight Male Plug # 96107 Stock# 1569196 TRUCK-LITE # 96107 3-pin straight male plug. Mates with new male pin series lamps. Three wire 16 gauge pigtail. SUPPLIES LIMITED	$1.49
	TRUCK-LITE Right Angle Stop/Turn Plug # 94992 Stock# 1569198 TRUCK-LITE # 94992 right angle stop turn plug is used with single contact sealed incandescent lamps. Features 16 gauge wire with tin plated brass terminals. SUPPLIES LIMITED	$1.29
	TRUCK-LITE 2-Pin Straight Male Plug # 96108 Stock# 1569197 TRUCK-LITE # 96108 2-pin straight male plug. Mates with new male pin series lamps. Two wire 16 gauge pigtail.	$1.69
	50' ABS Green Lectraflex 7 Conductor Wire #3-326 Stock# 1566188 Phillips 7 conductor 50' spool - 1/8, 2/10, 4/12 Ga. ABS Bright Green Black - Brown - Blue - Green - Red - White - Yellow	$143.50
	100' ABS Green Lectraflex 7 Conductor Wire #3-327 Stock# 1566189 Phillips 7 conductor 100' spool - 1/8, 2/10, 4/12 Ga. ABS Bright Green Black - Brown - Blue - Green - Red - White - Yellow	$285.00
	50' Black Duraflex 7 Conductor Wire #3-241 Stock# 1566190 Phillips 7 conductor 50' spool - 1/12, 6/14 Ga. black jacket Duraflex wire Black - Brown - Blue - Green - Red - White - Yellow	$64.00
	100' Black Duraflex 7 Conductor Wire #3-242 Stock# 1566191 Phillips 7 conductor 100' spool - 1/12, 6/14 Ga. black jacket Duraflex wire	$121.50
	50' Black Duraflex 6 Conductor Wire #3-201 Stock# 1566192 Phillips 6 conductor 50' spool - 6/14 Ga. black jacket Duraflex wire Black - Brown - Green - Red - White - Yellow	$49.95
	100' Black Duraflex 6 Conductor Wire #3-202 Stock# 1566193 Phillips 6 conductor 100' spool - 6/14 Ga. black jacket Duraflex wire Black - Brown - Green - Red - White - Yellow	$97.50
	50' Black Duraflex 4 Conductor Wire #3-191 Stock# 1566194 Phillips 4 conductor 50' spool - 4/14 Ga. black jacket Duraflex wire Brown - Green - White - Yellow	$37.50
	100' Black Duraflex 4 Conductor Wire #3-192 Stock# 1566195 Phillips 4 conductor 100' spool - 4/14 Ga. black jacket Duraflex wire Brown - Green - White - Yellow	$73.50