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25 Ft 5-Way Trailer Wiring Harness - Wishbone Style - 30" Ground - 5' Auxiliary Wire

25 Ft 5-Way Trailer Wiring Harness - Wishbone Style - 30" Ground - 5' Auxiliary Wire

Item # A25W5B

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25 Ft 5-Way Trailer Wiring Harness - Wishbone Style - 30" Ground - 5' Auxiliary Wire Trailer End Connector A25W5B
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  • Trailer Connectors
  • Trailer End Connector
  • 5 Flat
  • Plug and Lead
  • Optronics
  • 25 Feet Long
5-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. Auxiliary wire signals trailer brakes to disengage when in reverse. Lowest Prices for the best wiring from Optronics. 25 Ft 5-Way Trailer Wiring Harness - Wishbone Style - 30" Ground - 5' Auxiliary Wire part number A25W5B can be ordered online at etrailer.com or call 800-298-8924 for expert service.


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  • Reviews (21)
  • Q & A (32)
  • Videos (1)
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  • Why etrailer?

Optronics Wiring - A25W5B

5-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. Auxiliary wire signals trailer brakes to disengage when in reverse.


Features:

  • 5-Way trailer harness connects to your tow vehicle to control trailer light functions
    • Ideal for marine trailers with hydraulic or surge brakes
  • 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
  • Auxiliary wire (blue) connects to backup light circuit to disengage surge brakes when you are driving in reverse
    • Hydraulic actuator must have electric lockout feature built-in to disengage the trailer brakes
  • Color coded wires help with installation
    • White - ground
    • Brown - tail lights
    • Yellow - driver side stop/turn
    • Green - passenger side stop/turn
    • Blue - auxiliary wire


Specs:

  • Wire harness length: 25'
  • Ground wire length: 30"
  • Auxiliary wire length: 5'


Manufacturer Cross Reference
Harness will work as an exact replacement for:

  • Truck Lite # 002275


A25W5B Optronics 25 Ft 5-Way Trailer End Wishbone Wiring Harness - 30" Ground - 5' Blue Wire

Alternate part number: A-25W5B






California residents: click here


Video of 25 Ft 5-Way Trailer Wiring Harness - Wishbone Style - 30" Ground - 5' Auxiliary Wire


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




Video Transcript for Optronics Wiring - Trailer Connectors - A25W5B Review

Today we're going to review part number A25W5B. This is the Optronics 25 foot wishbone 5-way trailer harness with the 30 inch ground wire and the 5 foot blue wire. This harness has a 25 foot long split wishbone 5-way trailer wiring harness. It has five conductor wires in it and a 30 inch ground wire. It also has this 5 foot blue wire which can be used for lights or brakes. Basically what happens is when you go to install this on your trailer the white wire with the eyelet on it of course will be secured to a nice good clean ground. This would be connected to your wiring on your trailer and then the 5 foot long blue wire basically on a 5-way flat like this it's used on trailers with either surge brakes or hydraulic brakes.

Basically what you do is this additional wire is tapped into the backup light circuit and what it does is disengage the trailer coupler, the actuator, when the vehicle is reversing thus turning off the trailer brakes. They give you the 5 foot blue wire and 30 inches of a white ground wire on this harness. A total of 25 foot length of harness itself. That should do it for the review of part number A25W5B, the Optronics 25 foot wishbone 5--way trailer harness with the 30 inch ground wire and the 5 foot blue wire. .


Customer Reviews

25 Ft 5-Way Trailer Wiring Harness - Wishbone Style - 30" Ground - 5' Auxiliary Wire - A25W5B

Average Customer Rating:  4.9 out of 5 stars   (21 Customer Reviews)

5-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. Auxiliary wire signals trailer brakes to disengage when in reverse.

- A25W5B
by:

Part was not in stock but company stayed in close communication until I received my order. Very pleased with this company in other orders as well. 546524



- A25W5B
by:

Wiring is great. Was given 2 truck tail lights with back up lenses so I needed to rewire my trailer for a 5 wire system. My trailer is 30 years old so it needed a complete makeover. e trailer was a great help. They had a 5 wiring harness and a duel trailer connector for my Jeep. I needed a 4 wire and a 5 wire adapter to fit the Jeep to 2 trailers I own. They had what I wanted and it was delivered in 3 days. 203588



- A25W5B
by:

Great product. 346087



- A25W5B
by:

Fast shipping and great product. Easy to install on my boat trailer. Will test the longevity of this product over the next several years. But overall very pleased, and etrailer is a wonderful company. 657839



- A25W5B
by:

Product works well. Installed on boat trailer used primarily in saltwater. Corrosion is minimal. 625382



- A25W5B
by:

So, I converted my brand new Loadrite trailer to LED'S and wanted to add up a reverse light. I purchased this 5 wires trailer light harness to do the trick. Very good quality and the color code stayed the same. Had no problem what so ever and was an easy swap. I soldered every wires and protect them with heat shrink tubing and that should last a very long time. Thank you. 509981


Comments

George, after one year, Im pleased to say that your product still perform flawlessly. All is good with the harness and would recommended to all of your potential customer. Thank you for the follow up a year later, really show whos taking care of his customer. Again, thank you,

Vincent - 05/19/2019

55458

- A25W5B
by:

When the original products I ordered was out of stock, they contacted me ASAP and let me know there was another part number that could be used. Great service. 489260



- A25W5B
by:

Good quality and shipped exactly as pic tured. 482447



- A25W5B
by:

Needed to replace my wiring on my 18 foot boat trailer. This did the job. Easy plug and play. 436537



- A25W5B
by:

I received exactly what I thought I needed. I have my trailer rewired and we're ready to go fishing. Couldn't be happier! 434754



- A25W5B
by:

Everthing looks perfect . 421752



- A25W5B
by:

All products are good quality and arrived in just a few days! Excellent service! 409868



- A25W5B
by:

I purchased this set to rewire my race car trailer and add reverse lights to the pigtail... wiring went flawlessly and there was plenty of wire and connectors are good quality... even had a dog chew on the trailer end and other than a slight ground issue, works perfectly. 337700



- A25W5B
by:

5-wire harness kit is exactly what I need. I hate splicing wiring runs because, in a saltwater environment, this only leads to more chances for corrosion. The only thing that would be better is the complete round plug set-up. My boat and truck are happy! 304199



- A25W5B
by:

Well made product easy to install.Delivered in 3 days,with free shipping as I ordered it with a few other items.Priced very reasonable. I am very happy with my order. 243696



- A25W5B
by:

Works great, fast shipping. 186515



- A25W5B
by:

All items were shipped same day as ordered and exactly as what they were to be! Thanks 182759



- A25W5B
by:

Wire harness arrived quickly and was exactly as described. Worked perfectly and great price. 180700



- A25W5B
by:

Product was exactly what I wanted as as described. Shipping was very reasonable and arrived 1 day ahead of schedule 79684



- A25W5B
by:

This wiring is almost plug and play! It is already set up with double brown wires to meet today's trailer wiring standard. And with the hitch-end flat plug and ground ring already in place, it is a quick installation. Thanks. 69252



- A25W5B
by:

Replacement 61654


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Ask the Experts about this Optronics Wiring
Do you have a question about this Wiring?


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  • What you have is a 5-way trailer connector with a wishbone running light circuit and 5th auxiliary circuit. The closest thing we have would be the Wishbone 5-way Part # A25W5B. This has a wishboned running light circuit, but the 5th circuit is not. You can still make this work though. You just need to run both of the red wires from your trailer wiring into one butt connector and then run the other side of the butt connector to the blue wire of the # A25WB.
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  • The best solution is going to be the part # A25W5B. What you would want to do is use the part # A25W5B to provide the wiring and connector for your trailer but then use a junction box like part # 38656 to make organizing the wiring and running each of the wires to each circuit easier. I attached an install video for this box for you to check out as well. I also attached a help article with trailer wiring diagrams as well.
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  • Yes, the Submersible, Over 80" Aero Pro LED Trailer Light Kit part # TLL36RK, Light Guide LED Backup Light part # BUL602CB, 25 ft. Wishbone 5-Way Trailer Harness part # A25W5B, and Right Angle 3-Wire Pigtail for Optronics Trailer Lights part # A47PB will all work together and give your trailer reverse lights. The Submersible Tail Light Kit part # TLL36RK comes with a 4-way wiring harness and since you will be using a 5-way wiring harness, the more cost effective solution would be to...
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  • Replacing Trailer 5-Way That Has Each Circuit Split Into Two Wires
  • That specific version of 5-way is not available at this time but the # A25W5B is the closest solution we have to this. It has the brown wire "wishboned" or split for either side of the trailer but the rest of the wires are a single wire per circuit. So what you'd need to do is run both of the wires you have on your trailer to the single wire on the 5-way and you'd be set. For butt connectors we have the part # DW05714.
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  • 5-Way Connector Recommendation for a Boat Trailer for Reverse Lights
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  • What Gauge are the Wires on Optronics Wishbone 5-Way Trailer Harness?
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  • Parts Needed for Installing 5-Way Harness on a Boat Trailer
  • The best solution is going to be the part # A25W5B that you referenced. I will get into more of that here in a second, but the part # TLL36RK only looks like it comes with all needed connectors and wouldn't require any hardwiring. What you would want to do is use the part # A25W5B to provide the wiring and connector for your trailer but then use a junction box like part # 38656 to make organizing the wiring and running each of the wires to each circuit easier. I attached an install video...
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  • Trailer Wiring Issues with Running Lights Blinking
  • Step one is to isolate the problem to either your tow vehicle, your wiring harness or your trailer wiring. To begin, disconnect the trailer wiring harness from the towing vehicle. First focus on troubleshooting the trailer. Check the white ground wire from the trailer plug to ensure that you have a clean secure ground connection to the trailer frame. Internal trailer wiring can over time develop wear spots in the insulation that can create a dead short. Such a condition will quickly...
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Info for this part was:

Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Updated by:
Brian T

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