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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
Our Price: $30.15
Trailer Wiring
Shipping Weight: 0.92 lbs
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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. Great Prices for the best trailer 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 1-800-940-8924 for expert service.
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Optronics Trailer Wiring - A25W5B

  • Trailer Connectors
  • Trailer End Connector
  • 5 Flat
  • Plug and Lead
  • 21 - 30 Feet Long
  • Optronics

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'
  • Wire gauge (all): 20
  • 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


Customer Satisfaction Score:


Customer Reviews

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

Average Customer Rating:  4.6 out of 5 stars   (50 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.

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.

Vincent

5/19/2019

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,



by:

Very bad experience. Placed an order on 5-24-23 for an item that showed to be in stock on the website. Receive an email stating that is back ordered and due to ship 6-5-23, several emails later still no wiring harness. Finally 7-10-23 I receive an empty envelope, well not completely empty it has a letter from USPS stating that the enclosed was found loose in the mail. A box would have been more appropriate to ship this item, as I have been in shipping for two different companies for 38 years now. I am unable to upload pictures of the envelope, I will send them via email.

Etrailer Expert

Katrina D.

7/21/2023

Oh no! Let me get you over to our customer service department for them to look into issuing you a return.



by:

Sent the wrong harness ,... I ordered a 5 wire , received a 4 wire. Will not be able to use it ,and need the harness before the weekend, going on vacation .

Etrailer Expert

Jenny N.

8/2/2023

Oh my goodness! My apologies for sending the incorrect harness. Customer Service will be in contact with you.



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.



by:

Everything I ordered is in the box! Excited to get it all installed.



by:

Got this wiring harness for my small camper to completely re wire it. Also got rheTLl28RK combination trailer lights. Nice and bright!



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!



by:

Easy to install perfect length and works great!! Can’t see it on the trailer because I have it heat shrinked and wire loomed for protection



by:

WORKED GREAT.



by:

Worked exactly how I needed it to.



by:

Worked great. Exactly as I expected



by:

After having this in my garage for about 6-9 months I finally got around to rewiring my trailer with this harness. The harness has been on the trailer for 4 months and it has been solid. I would recommend getting longer than you think you will need. IE if you have a 25 ft trailer get a harness that is ~30 ft.



by:

I have been in sales, retail, B2B, and sales management for over 30 years. E trailer has the whole package - excellent customer and sales service, great products, videos for those of us who like to do our own work, fair prices, and my go-to for my trailer needs.



by:

This product was exactly what I was looking for. I was having issues with my trailer lights on a 20 year old trailer. I decided it was best to just remove all of the old wiring and start off new. This product took care of any concerns i might have had by just replacing a wire or two. All of the lights and connections are excellent and I don't worry about something not working.



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.



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.



by:

I. ordered this along with marker lights its been a year and they work great.



by:

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



by:

Just what I needed thanks



by:

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



by:

Great, I think I will enjoy the install, with all that's going on in the World. Thanks for the extremely fast delivery and help with making my selections!


I did make one mistake, the Thin LED Light I order; I think I need to order the base bracket as well!



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.



by:

Package arrived late Fri night or Sat morning which isn’t bad but I don’t know what your processing time is. I never got a confirmation that it had shipped. Everything came in good shape and was installed on trailer. I would use your company again. Thank you for responding to me.



by:

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



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.


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See what our Experts say about this Optronics Trailer Wiring

  • Replacing 5-Way Connector with 8 Wires on Boat Trailer
    We definitely have what you need to replace the 5-Way connector on your boat trailer, but there's not going to be a pre-made 5-Way harness that includes 8 wires. As you mentioned the most you will likely find is a wishbone harness like # A25W5B that uses 6 wires (a separate running lights circuit wire for each side of the trailer). A previous owner or the factory simply used a non-standard wiring setup when installing the connector and wiring on your trailer. With all of that being said,...
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  • 5-Way Trailer Wiring Harness that Has Wishboned Running Light Circuit
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    Yes, the LED Trailer Light Kit part # TL16RK, 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 purchase the Waterproof, Over 80"...
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    What you are describing sounds like the typical bizarre behavior of a ground problem. Since it seems to be affecting all of the circuits I would start with the connector on your trailer. I would check the ground circuit for corrosion and fix as necessary. If that does not fix the problem you could try checking all of the grounds of your trailer and make sure they are attached to a clean metal surface. You might even try running a jumper cable from your ground circuit to the frame of your...
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    There are 6 wires on the 25 Ft 5-Way Trailer Wiring Harness # A25W5B that you referenced because this has a wishboned running light circuit which means it has a wire to run to either side of the trailer's running light circuit. So it still has the 5 standard circuit of a 5-way but just has two wires you can use for the running light circuit.
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  • 5-Way Replacement Recommendation with Wishboned Trailer Running Light and Ground Circuit
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Info for this part was:

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

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