25 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 25' Ground

25 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 25' Ground

Item # A25W2GWB

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Optronics Wiring - A25W2GWB
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  • Trailer Connectors
  • Trailer End Connector
  • 4 Flat
  • Plug and Lead
  • Optronics
  • 25 Feet Long
4-Way trailer harness connects to your tow vehicle to control trailer light functions. Wishbone-style harness comes with 2 tail light wires split for simple wiring. Lowest Prices for the best wiring from Optronics. 25 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 25' Ground part number A25W2GWB can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (11)
  • Q & A (4)
  • Videos (1)
  • Photos
  • Why etrailer?

Optronics Wiring - A25W2GWB

4-Way trailer harness connects to your tow vehicle to control trailer light functions. Wishbone-style harness comes with 2 tail light wires split for simple wiring.


Features:

  • 4-Way trailer harness connects to your tow vehicle to control trailer light functions
  • Wishbone-style harness comes with 2 tail light wires split for simple wiring
    • Allows you to run wires separately down each side of the trailer to tail lights without needing a jumper wire
  • Color coded wires help with installation
    • White - ground
    • Brown - tail lights
    • Yellow - driver side stop/turn
    • Green - passenger side stop/turn


Specs:

  • Wire harness length: 25'
  • Ground wire length: 25'
  • 3-Year Warranty


A25W2GWB Optronics 4-Way Wishbone Trailer Wiring Harness with (2) 25' Ground Wires - 25' Long






California residents: click here


Video of 25 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 25' Ground


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Optronics Wiring - Trailer Connectors - A25W2GWB Review

Speaker 1: Today we're taking a look at a Four Way Wishbone Trailer Wiring Harness. This wishbone style harness allows you to easily rewire your trailer with a four pole flat trailer connector being up towards the tongue so you can easily connect to your vehicle. This is a wishbone style harness. It has an extra taillight wire that makes it easier to wire your trailer. We have the four pole flat trailer end connector. Easily plugs into the tow vehicle.This is a 25 foot long wire harness.

So all the wires are 25 foot long, even the ground wire. So the white wire on the unit is the ground wire, runs the full length of the harness. We have one ground wire on each side that extends, again, the full length: front to back.Now when it comes to the wire coloring, you'll see coming out of the plug we have two white wires. Those are the ground wires. We have two brown wires.

Those are our taillights. We have the yellow wire, which is for the driver's side stop and turn signal. And then we have the green wire, which is for the passenger side stop and turn signal. That's gonna do it for today's look at the Four Way Wishbone Trailer Wiring Harness.


Customer Reviews

25 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 25' Ground - A25W2GWB

Average Customer Rating:  4.8 out of 5 stars   (11 Customer Reviews)

4-Way trailer harness connects to your tow vehicle to control trailer light functions. Wishbone-style harness comes with 2 tail light wires split for simple wiring.

- A25W2GWB
by:

The wishbone harness should work perfect for the re-wiring job I have to do. Ordering was super easy, and the shipping was fast. Thank you. 693606



- A25W2GWB
by:

Just what I needed 697910



- A25W2GWB
by:

Arrived in good condition, I haven't installed it yet, but the quality looks like what I want. 642882



- A25W2GWB
by:

i like that its a double gound which will make it a stronger connection for the wiring to the lights 614869



- A25W2GWB
by:

This is the same wire harness that the OEM uses, it's a perfect replacement! Couldn't find the harness anywhere else, thanks E-Trailer. 576020



- A25W2GWB
by:

Good product making trailer wiring easy. All grounding issues eliminated. 717019



- A25W2GWB
by:

Item was exactly what I needed 714385



- A25W2GWB
by:

Outstanding first and second effort to Tiffany from etrailer thank you so much for resending my order at your expense to make sure your customer was satisfied thank you I truly hope the one that was juggled by UPS got back to you so you didn't actually have to cost the company just for my purchase but again in shock in all that I didn't take the hit I hope the company didn't either cheers one happy customer thank you again Tiffany 711421



- A25W2GWB
by:

Top quality product 703039



- A25W2GWB
by:

Excellent product with ground wire the same length as the rest. 690104



- A25W2GWB
by:

A great wiring kit for a tilt trailer. 658665


11
11

Ask the Experts about this Optronics Wiring

Do you have a question about this Wiring?


  • Availability of 16 Gauge Wire for Trailer Lights
  • The Optronics 4-Way Wishbone Trailer Wiring Harness # A25W2GWB that you referenced has 18 gauge wire for the ground and 20 gauge wire for all of the lighting functions. I check with all of the other wishbone harnesses that we have and they all use similar gauge wiring none of which is 16 gauge. For 16 gauge wiring you can use the Deka Bonded 4 Wire # 16-4B-1 which is sold by the foot. I recommend using heat shrink butt connectors like part # DW05744-10 and the Quick-Fix Replacement 4-Way...
    view full answer...

  • Should Ground Wire of Trailer Wiring Run to Frame of Trailer or Back to Light Assemblies
  • Either option will work fine. If it was my decision to make I would ground the trailer wiring on the frame near the coupler since that's easiest and just as effective, but if you had an aluminum frame trailer or a dump trailer you'd have to run the ground wire back to the light assemblies so that they ground sufficiently. Most trailer lighting grounds through the mounting hardware which allows for an easier install so grounding the trailer connector to the frame at any location gives...
    view full answer...

  • Troubleshooting Wishbone Wiring
  • It sounds like the running lights are the issue as they are not functioning with your wishbone harness. I'm not sure what harness you have but a 4-way wishbone like # A25W2GWB will have two taillight wires, one for driver side stop/turn and the other for passenger side stop/turn. If your lights are not working, in order to determine the specific problem you will need to purchase a circuit tester if you do not have one - the very handy Cordless Circuit Tester # PTW2979 would be my strong...
    view full answer...

  • What Type of Trailer Wiring Does Boat Trailer Typically Have
  • Boat trailer 4-way trailer wiring is done in the same way as other 4-way trailer wiring. Sometimes boat trailer will use 5-ways instead if the trailer has surge brakes and the actuator has a reverse lockout which allows the trailer to back up without brake application. For that we have the part # HM37908 which comes with a 5 foot harness.
    view full answer...


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Info for this part was:

Expert Research:
Jameson C
Installed by:
Cole B
Edited by:
Daron K
Written by:
Brian T

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