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Trailer WiringTrailer Wiring

Trailer Wiring

Our 4-pin and 7-pin trailer wiring harnesses, trailer adapters and trailer wire testers are designed to simplify trailer maintenance and repair.

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Trailer Wiring

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  1. 4-Way Flat Wishbone Style Trailer Wiring Harness - 25ft Male + 4ft Female; 18 AWG
    4-Way Flat Wishbone Style Trailer Wiring Harness - 25ft Male + 4ft Female; 18 AWG
    Price: $9.99
  2. 7-Way Blade to 6-Way Round Trailer Adapter
    7-Way Blade to 6-Way Round Trailer Adapter
    Price: $3.99
  3. 7-Way Blade to 4-Way Flat Trailer Adapter
    7-Way Blade to 4-Way Flat Trailer Adapter
    Price: $3.25
  4. 7-Way Blade to 5-Way Flat Trailer Adapter
    7-Way Blade to 5-Way Flat Trailer Adapter
    Price: $3.50
  5. 12ft 7-Way Blade 10-14 AWG Trailer Cable
    12ft 7-Way Blade 10-14 AWG Trailer Cable
    Price: $27.99
  6. 16ft 7-Way Blade 10-14 AWG Trailer Cable
    16ft 7-Way Blade 10-14 AWG Trailer Cable
    Price: $37.99
  7. 3ft 10-14 AWG 7-Way Trailer Plug Extension Cable
    3ft 10-14 AWG 7-Way Trailer Plug Extension Cable
    Price: $14.99
  8. 8ft 10-14 AWG 7-Way Trailer Plug Extension Cable
    8ft 10-14 AWG 7-Way Trailer Plug Extension Cable
    Price: $24.99
  9. 7-Way Trailer Wiring Junction Box
    7-Way Trailer Wiring Junction Box
    Price: $7.50
  10. 7-Way Trailer Wiring Junction Box w/ 8ft Cable
    7-Way Trailer Wiring Junction Box w/ 8ft Cable
    1
    Price: $24.99
  11. 4-Way Flat Trailer Wiring Circuit Tester
    4-Way Flat Trailer Wiring Circuit Tester
    Price: $2.50
  12. 7-Way Blade Trailer Wiring Circuit Tester
    7-Way Blade Trailer Wiring Circuit Tester
    3
    Price: $4.99
  13. 6-Way Round to 4-Way Flat Trailer Adapter
    6-Way Round to 4-Way Flat Trailer Adapter
    Price: $3.25
  14. 8ft 7-Way Blade 10-14 AWG Trailer Cable
    8ft 7-Way Blade 10-14 AWG Trailer Cable
    Price: $19.99
  15. 12ft 10-14 AWG 7-Way Trailer Plug Extension Cable
    12ft 10-14 AWG 7-Way Trailer Plug Extension Cable
    Price: $34.99
  16. 5-Way Flat Trailer Wiring Circuit Tester
    5-Way Flat Trailer Wiring Circuit Tester
    Price: $2.99

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Long Haul Components

Few pieces of equipment see more abuse from the weather, the road, and the job than your trailer. If it’s not hauling heavy loads in the rain, it’s baking in the sun on a shadeless job site. And whether your trailer gives you years of solid use or gives up when the going gets tough has a lot to do with the quality of your trailer wiring. So if you’ve got a boat or a work trailer, a 6’ or a 14’ trailer, or 4 or 7way trailer wiring you can count on our replacement harnesses, junction boxes, and wire testers to keep you on the road and running strong.