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Wiring Adapter Fitguide
Trailer Wiring Adapter Fitguide

Need help to find the correct wiring adapter for your car, truck, or trailer?

Use the Hitch Hunter � Wiring Adapter Fitguide to easily find the adapter you need.


We have also put together some in depth information about wiring your vehicle to tow a trailermore information, including descriptions of all the different types of wiring harnesses, adapters, diagrams of how to wire a trailer, and wiring diagrams for different types of plugs.

12" Car and Trailer End Loop
Product Code: 9653P
Product Price: $3.70
Product Weight: 1.00 pounds
More Information and Pricing
4-Pole Trailer Connector Car and Trailer End Loop
  • 12" Long 4-Pole Loop

 
4 Pole Knock-Out Adapter - Hidden Hitch Trailer Hitches
Product Code: 30601
Product Price: $4.99
Product Weight: 1.00 pounds
More Information and Pricing

Allows 4-Way flat trailer connector to be mounted into a 6-Way trailer connector bracket.

  • Dust and Water Resistant
  • Works great on Hidden Hitch brand trailer hithes with built-in electrical brackets

Tow Ready # 118601


 
48" Car and Trailer End Loop 4-Pole
Product Code: 18044
Product Price: $4.59
Product Weight: 1.00 pounds
More Information and Pricing

4 Pole Trailer Connector Loop

  • 48" 4-Pole Loop
  • Includes 4 Wire Taps

Tow Ready # 118044 by Draw-Tite, Hidden Hitch and Reese


 
6-Way Connector 7' Loop
Product Code: 118666
Product Price: $30.95
Product Weight: 10.00 pounds
More Information and Pricing

6 Pole Trailer Connector Loop

  • Allows for easy Hook-up of 5th Wheel or Gooseneck Trailers
  • 7 ft. Lead Reaches Almost Anywhere

Replaces #20026 / Tow Ready #118666 by Draw-Tite, Hidden Hitch and Reese


 
60" Car and Trailer End Loop 4-Pole
Product Code: 18045
Product Price: $4.20
Product Weight: 2.00 pounds
More Information and Pricing
4 Pole Trailer Connector Loop
  • 60" 4-Pole Loop
  • Includes 4 Wire Taps

 
60" Car and Trailer End Loop 5-Pole
Product Code: V52120
Product Price: $6.75
Product Weight: 1.00 pounds
More Information and Pricing
5-Pole Trailer Connector Loop
  • 60" long

 
7-Way Connector 7' Loop
Product Code: 20027
Product Price: $29.95
Product Weight: 4.00 pounds
More Information and Pricing

7 Pole Trailer Connector Loop with Vehicle and Trailer Ends

  • Allows for easy Hook-up of 5th Wheel or Gooseneck Trailers
  • Durable Plastic Connectors
  • 7 ft. Lead Reaches Almost Anywhere
  • 7 wires
    • (3) 12 gauge
    • (4) 14 gauge

Tow Ready # 118664


 
Adapter 4 Pole to 5 Pole Trailer Wiring Adapter
Product Code: 20036
Product Price: $9.95
Product Weight: 1.00 pounds
More Information and Pricing

Trailer wiring adapter that changes the 4 pole flat on your vehicle into a 5 pole flat.

The blue wire gets spliced into the reverse light wire on the vehicle which is easily done with the included scotch lock.


 
Adapter 4 Pole to 5 Pole Trailer Wiring Adapter (shorter)
Product Code: 47515
Product Price: $7.50
Product Weight: 0.50 pounds
More Information and Pricing

Trailer wiring adapter that changes the 4 pole flat on your vehicle into a 5 pole flat.

The blue wire gets spliced into the reverse light wire on the vehicle which is easily done with the included scotch lock.

Hopkins # 47515, TAP # 37515


 
Adapter 4 Pole to 6 Pole
Product Code: 30637
Product Price: $15.00
Product Weight: 2.00 pounds
More Information and Pricing

Adapter converts your 4 pole wiring on vehicle to 6 pole round connector. Additional leads for brake (blue) and power (black) can be connected to allow for electric brakes and accessories.

Recommended
Wiring Harness Mount Brackets
30200

Tow Ready # 20320


 
Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter
Product Code: 37175
Product Price: $22.95
Product Weight: 2.00 pounds
More Information and Pricing

Adapter converts from 4 pole wiring on vehicle to 6 pole round plug and 4 pole flat. Additional wire leads for brake and an accessory.

  • 4 pole to 6 Pole and 4 Pole Vehicle Side Trailer Wiring Adapter
  • Includes Mounting Bracket
  • Includes 3 Wire Leads
    • Blue - for electric brakes - Center Pin
    • Red - for auxiliary or hot lead - Outside Pin
    • White - for the ground

Note: The white wire must be grounded to the vehicle frame. The other two wires can be tied up if they are not going to be used.




 
Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector
Product Code: 30717
Product Price: $15.00
Product Weight: 2.00 pounds
More Information and Pricing

4-Way to 7-Way Trailer Wiring Adapter

Adapter converts from 4 pole wiring on vehicle to 7 pole round plug. Additional wire leads for brake, power and accessory are 12" long.

Recommended
Wiring Harness Mount Brackets



Picture of the 7-Way Trailer Connector


 
Adapter 4 Pole to 7 Pole and 4 Pole
Product Code: 37185
Product Price: $22.95
Product Weight: 2.00 pounds
More Information and Pricing

Adapter converts from 4 pole wiring on vehicle to 7 pole round plug and 4 pole flat. Additional wire leads for brake, power and accessory.

  • Mounting Bracket Included

Wire Functions:
White: Ground
Blue: Brake
Black: "Hot" Lead - 12V power supply
Purple: Aux. - Reverse Lights etc.

Hopkins # 47185, TAP # 37185


 
Adapter 4 Round to 4 Flat
Product Code: 47465
Product Price: $13.98
Product Weight: 1.00 pounds
More Information and Pricing

Adapts from a 4 round plug on your vehicle to a flat 4-Pole on your trailer.


Hopkins # 47465; Tap # 37465

Replaces # 17006 and 13173


 
Adapter 4 Way Flat to 6 Way Square for Jayco
Product Code: 30104
Product Price: $22.25
Product Weight: 2.00 pounds
More Information and Pricing

4 Way Flat to 6 Pole Square RV Adapter for Jayco RV Only

  • 31" Long
  • 18 ga. Wires

Tow Ready # 118104


 
Adapter 6 Pole to 4 Pole with Cover
Product Code: 37308
Product Price: $9.95
Product Weight: 1.00 pounds
More Information and Pricing
Converts from 6 pole round adapter on your vehicle down to 4 pole flat adapter.
If your truck has the connector on the left, and your trailer has the connector on the right, you will want this adapter.
3200 18004
Vehicle End Trailer End


Similar to 30700 and 37325


 
Adapter 6 Pole to 4 Pole with Tester and Cover
Product Code: 37325
Product Price: $13.95
Product Weight: 1.00 pounds
More Information and Pricing

Converts from 6 pole round adapter on your vehicle down to 4 pole flat adapter.

If your truck has the connector on the left, and your trailer has the connector on the right, you will want this adapter.
30200 18004
Vehicle End Trailer End






Similar to 30700 and 37308

Hopkins # 47325, TAP # 37325


 
Adapter 6 Pole to 7 Pole Trailer Wiring Adapter
Product Code: 37435
Product Price: $23.95
Product Weight: 2.00 pounds
More Information and Pricing
Adapter converts 6 way wiring connector on your vehicle to 7 way flat connector for trailers.

 
Adapter 7 Pole Round Pins To 4 Pole Flat
Product Code: 30709
Product Price: $11.95
Product Weight: 2.00 pounds
More Information and Pricing

Adapter to covert from the 7 pole round plug with round pins on your vehicle down to a flat 4 pole connector.

Hopkins # 47405; Tap # 37405


 
Adapter 7 Pole to 4 Pole
Product Code: 37358
Product Price: $10.95
Product Weight: 1.00 pounds
More Information and Pricing
If your truck has the connector on the left, and your trailer has the connector on the right, you will want this adapter.
30300 18004
Vehicle End Trailer End



 
Adapter 7 Pole to 4 Pole and 5 Pole
Product Code: 37385
Product Price: $18.95
Product Weight: 1.00 pounds
More Information and Pricing

Wiring Adapter - converts the 7 way trailer connector on the vehicle to a 4 way or 5 way connector to match the trailer.

If your truck has the connector on the left, and your trailer has one of the connectors on the right, you will want this adapter.
30300 18004 20017
Vehicle End Trailer Ends

Hoppy # 47385, TAP # 37385


 
Adapter 7 Pole to 4 Pole with LED Nite-Glow (TM)
Product Code: 37335
Product Price: $14.95
Product Weight: 0.50 pounds
More Information and Pricing

7-Way to 4-Way Flat Trailer Connector Adapter with LED Nite-Glow

  • Adapter LEDs light up on taillight function.
If your truck has the connector on the left, and your trailer has the connector on the right, you will want this adapter.
30300 18004
Vehicle End Trailer End

Hopkins # 47335, TAP # 37335


 
Adapter 7 Pole to 4 Pole with Tester and Cover
Product Code: 37345
Product Price: $14.95
Product Weight: 1.00 pounds
More Information and Pricing
If your truck has the connector on the left, and your trailer has the connector on the right, you will want this adapter.
30300 18004
Vehicle End Trailer End



Similar to 18142 and 30702


 
Adapter 7 Pole to 5 Pole
Product Code: 20018
Product Price: $13.50
Product Weight: 3.00 pounds
More Information and Pricing

Adapter converts 7 pole flat pin wiring connector on your vehicle to 5-pole flat connector for trailers with surge brake connectors.

  • 3" wire extension

If your truck has the connector on the left, and your trailer has the connector on the right, you will want this adapter.
Vehicle End Trailer End


Tow Ready # 118703. Similar to # 30703.


 
Adapter 7 Pole to 6 Pole and 4 Pole with Cover - Universal
Product Code: 37565
Product Price: $18.55
Product Weight: 1.00 pounds
More Information and Pricing

Adapter converts your 7 pole plug on the vehicle down to 6 pole plug and 4 pole flat plug to fit your trailers' connector.

Note: Center pin is set-up as the hot lead but can easily be changed to work with trailers that have the center pin wired as the brake.


 
Adapter 7 Pole to 6 Pole - Universal
Product Code: 37549
Product Price: $14.95
Product Weight: 1.00 pounds
More Information and Pricing

Adapter converts your 7 pole plug on the vehicle down to 6 pole plug to fit your trailer's connector.


Note: Center pin is set-up as the hot lead but can easily be changed to work with trailers that have the center pin wired as the brake.


 
Adapter 7 Pole to 6 Pole Universal with LED Tester
Product Code: 47525
Product Price: $16.95
Product Weight: 1.00 pounds
More Information and Pricing

Adapter converts your 7 pole plug on the vehicle down to 6 pole plug to fit your trailer's connector.


Note: Center pin is set-up as the hot lead but can easily be changed to work with trailers that have the center pin wired as the brake.
37549
37535
Front side of the plug where the trailer's 6-pole slides into.
37535

back side of the plug that slides into the existing vehicle connector.

Hopkins # 47525; TAP # 37525


 
Adapter 7 Pole to Cigarette
Product Code: 118019
Product Price: $13.95
Product Weight: 2.00 pounds
More Information and Pricing

Provides 12v power at the rear of the vehicle for travel accessories.

  • Ideal for Power Inverter Hook-up
  • Great for Tailgating

Replaces 20019


 
Adapter 7 Way (Blade) to 7 Way (Round Pin)
Product Code: 37595
Product Price: $25.95
Product Weight: 2.00 pounds
More Information and Pricing
Adapter converts 7 way (flat pin) wiring connector on your vehicle to 7 way (round pin) connector for trailers. The 7 way flat pin style is the most common 7 way connector that comes on many of the newer pickups.
 
Adapter 4 Pole to 7 Pole and 4 Pole, OEM Style
Product Code: V30606
Product Price: $28.95
Product Weight: 2.00 pounds
More Information and Pricing

Factory Style 4 Pole Adapter to 7 Pole and 4 Pole

This adapter will plug into the 4-pole flat trailer connector already on your vehicle and will allow you to tow a trailer with a 7 way connector or 4 pole flat connector. This adapter comes with additional pigtail wire leads to allow for the installation of additional functions with the 7 way connector, such as brakes, 12 v power, and reverse lights.

Designed to provide the convenience of both a 7-way and a 4-flat trailer connector hook-up without any more adapters.

  • 7-way connector is moisture resistant.
  • Includes mounting bracket.
Picture of the mounting bracket and hardware that is included with the wiring adapter. Mounting bracket is designed to be screwed into bottom of bumper or it can be attached without any drilling to a bracket that hose clamps around the trailer hitch.



 
Universal 4 Pole Adapter
Product Code: 18032
Product Price: $9.95
Product Weight: 1.00 pounds
More Information and Pricing

Universal 4 Pole Adapter

Individual wire hookup avoids splicing wires


 
Adapter 7 Pole to 4 Pole with Flex-Coil Wire and Nite-Glow (TM)
Product Code: 47015
Product Price: $27.95
Product Weight: 2.00 pounds
More Information and Pricing

7-Way to 4-Way Flat Trailer Connector Adapter with LED Nite-Glow and Flex-Coil HD Wiring

  • Adapter LEDs light up on taillight function.
  • Flex Coil wires stretch up to 3'
If your truck has the connector on the left, and your trailer has the connector on the right, you will want this adapter.
Vehicle End Trailer End

7-pole end on the adapter. 4-pole end on the adapter.

 
Trailer Connector Adapter, 7 Pole to 7 Pole, 5 Pole, 4 Pole and Cigarette Lighter
Product Code: TC-127
Product Price: $22.95
Product Weight: 1.00 pounds
More Information and Pricing

When you need to do everything at once, this adapter will help you do it. The adapater plugs into the 7-pole trailer connector on the vehicle and provides a 7-pole connector, 5-pole flat connector (most 4-pole flats can be plugged into this connector also), and 2 cigarette lighter plugs to be used as an alternate power source. Great for tailgating or on the job site.


 
Adapter 7 Pole to 4 Pole and 5 Pole with Vehicle and Trailer Beep Tester
Product Code: TC-701
Product Price: $21.95
Product Weight: 1.00 pounds
More Information and Pricing

Wiring Adapter - converts the 7 way trailer connector on the vehicle to a 4 way or 5 way connector (most 4-pole flats can plugged into this connector) to match the trailer. The adapter also has a built in tester that can check both the vehicle and the trailer lights. The Tester will beep to let you know the truck and even the trailer wiring is working properly.

  • Converts a 7-way vehicle end trailer connector to a 5 pole or 4 pole flat connector
  • Beep Tester - adapter will beep letting you know the vehicle and/or the trailer wiring systems are working properly
    • Tester can be turned on/off
    • Tests right turn and brake, left turn and brake, and tail light functions
If your truck has the connector on the left, and your trailer has one of the connectors on the right, you will want this adapter.
Vehicle End Trailer Ends










 
Adapter 7 Pole to 5 Pole Flat Wired Adapter
Product Code: A57WB
Product Price: $10.95
Product Weight: 0.50 pounds
More Information and Pricing

5-Way Flat to 7-Way Round Adapter - Wired

This is an adapter that converts the tow vehicle's 7-way round blade connector into a 5-way flat pin connector. This model has a short length of wire joining the two connectors.


 
Adapter 7 Pole to 5 Pole Flat - Molded
Product Code: A75TB
Product Price: $10.95
Product Weight: 0.50 pounds
More Information and Pricing

5-Way Flat to 7-Way Round Adapter - Single Piece

This is an adapter that converts the tow vehicle's 7-way round blade connector into a 5-way flat pin connector. This model is a one-piece device with the two connectors on either end.


 
Adapter 4 Pole to 6-Way and 4 Pole with LED Tester and Mounting Bracket
Product Code: 20108
Product Price: $29.95
Product Weight: 1.00 pounds
More Information and Pricing

Tow-Ready Trailer 6-Way Adapter LED Combo with Mounting Bracket by Draw-Tite, Hidden Hitch and Reese

Solid one-piece adapter for 6-Way round connector to a 4-way flat connector. The adapter easily plugs into 4-Way connector. Comes complete with 16 gauge bonded wire.

  • LED's indicate circuits have power
  • Used to convert any trailer wiring component, T-One or taillight converter with a 4-flat car end connector to a 6-way round and 4-way flat trailer connector
  • Includes mounting bracket
  • 16 gauge bonded wire leads provided for brake and auxiliary functions

20108 Trailer 6-Way Adapter LED Combo with Mounting Bracket by Tow-Ready


 
Adapter 4 Pole to 7-Way and 4 Pole with LED Tester and Mounting Bracket
Product Code: 20109
Product Price: $29.95
Product Weight: 1.00 pounds
More Information and Pricing

Tow Ready Trailer 7-Way Adapter LED Combo with Mounting Bracket by Draw-Tite, Hidden Hitch and Reese

Solid one-piece adapter for 7-Way flat pin connector to a 4-Way flat connector. The adapter easily plugs into 4-Way connector. Comes complete with 16 gauge bonded wire.

  • LED's indicate circuits have power
  • Used to convert any trailer wiring component, T-One or taillight converter with a 4-Way flat car end connector to a 7-Way round and 4-Way flat trailer connector
  • Includes mounting bracket
  • 16 gauge bonded wire leads provided for brake and auxiliary functions

20109 Trailer 7-Way Adapter LED Combo with Mounting Bracket by Tow-Ready


 
Tow Ready 7-Pole RV to 4- and 5-Pole Flat Adapter with Backup Alarm
Product Code: 118707
Product Price: $19.95
Product Weight: 1.00 pounds
More Information and Pricing

Features:

  • Device lets you effortlessly change 7-pole RV wiring into 4- and 5-pole flat
  • Audible backup alarm alerts others while your vehicle is in reverse

Specs:

  • Dimensions: 3.98" long x 1.88" wide x 8.88" tall
  • 12 volt DC - 7.5 amp
  • Limited lifetime warranty

118707 Tow Ready 7-Way Flat Pin to 4 and 5-Flat Adapter with Backup Alarm


 
Tow Ready 7-Pole RV to 7-Pole Flat Adapter with Backup Alarm
Product Code: 118705
Product Price: $19.95
Product Weight: 1.00 pounds
More Information and Pricing

Features:

  • 7 way trailer connector with backup alarm
  • Audible backup alarm alerts others while your vehicle is in reverse

Specs:

  • Dimensions: 3.98" long x 2.88" wide x 8.88" tall
  • 12 volt DC - 10 amp
  • Limited lifetime warranty

118705 Tow Ready 7-Way Flat Pin to 7-Way Flat Pin Adapter with Backup Alarm


 
Tow Ready 7-Pole RV to 6-Pole Round Adapter with Backup Alarm, Center Pin "Hot"
Product Code: 118706
Product Price: $19.95
Product Weight: 1.00 pounds
More Information and Pricing

Features:

  • Device lets you effortlessly change 7-pole flat wiring into 6-pole flat
  • Center pin becomes the 12 volt lead ("hot" lead), electric brake pin moved to the outside
  • Audible backup alarm alerts others while your vehicle is in reverse

Specs:

  • Dimensions: 3.98" long x 2.88" wide x 8.88" tall
  • Capacity: 12 volt DC - 7.5 amp
  • Limited lifetime warranty

118706 Tow Ready 7-Way Flat Pin to 6-Way Round Adapter with Backup Alarm (Electric Brakes to Outside Pin of 6-Way; Center Pin "Hot")


 

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