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3-Wire Pigtail for Optronics Trailer Lights - Weathertight Plug - 10" Lead

3-Wire Pigtail for Optronics Trailer Lights - Weathertight Plug - 10" Lead

Item # A45PMB
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3-Wire Pigtail for Optronics Trailer Lights - Weathertight Plug - 10" Lead Straight Pigtail A45PMB
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This 3-wire pigtail has a female plug on one end that pairs with the weathertight connection on the back of your Optronics light. Color-coded wire lead is 10" long. Designed specifically for lights that provide stop, tail, and turn functions. 1-636-306-4830 to order Optronics accessories and parts part number A45PMB or order online at Free expert support on all Optronics products. Guaranteed Lowest Price and Fastest Shipping for 3-Wire Pigtail for Optronics Trailer Lights - Weathertight Plug - 10" Lead. Accessories and Parts reviews from real customers.
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Optronics Accessories and Parts - A45PMB

  • Trailer Lights
  • Wiring
  • Plugs and Pigtails
  • Three Wire
  • Optronics
  • 10 Inch Long
  • Straight Pigtail

This 3-wire pigtail has a female plug on one end that pairs with the weathertight connection on the back of your Optronics light. Color-coded wire lead is 10" long. Designed specifically for lights that provide stop, tail, and turn functions.


  • Pigtail with weathertight plug allows you to wire your Optronics light to your trailer
    • Designed specifically for use with Optronics stop/tail/turn lights that have a weathertight connection
  • Female weathertight plug connects to back of trailer light
  • 3-Wire pigtail
    • White wire for ground
    • Black wire for tail light
    • Red wire for turn signal
  • #10 Ring terminal on ground wire
  • Wire length: 10"

A45PMB Optronics Straight 3-Wire Pigtail for Trailer Stop, Turn, and Tail Lights - Weathertight Connection

California residents: click here

Video of 3-Wire Pigtail for Optronics Trailer Lights - Weathertight Plug - 10" Lead

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

Video Transcript for Optronics Trailer Lights A45PMB Review

Today we're going to be taking a look at the Optronics 3-wire Pigtail for Optronics lights. This is their weather tight plug. The pigtail with the weather tight plug is going to allow you to wire your Optronics light to your trailer. This is designed specifically for use with Optronics stop-, tail-, and turn-lights that have a weather tight connection point. On this end we're going to have the female weather tight plug that's going to connect to the back of the trailer light. Then you're going to have a 3-wire design. The white wire is going to be your ground wire. That's going to have a No. 10 ring terminal on it. Then you're going to have a black wire.

That's going to be for the tail-lights. Then you're going to have your red wire, which is going to be for your stop- or turn-signals. The wire length on this unit is going to measure around 10 inches. On this side you're also going to have a weather tight gasket. That's going to keep the elements away from the connection points. Real quick, I just want to go ahead and show you how it would connect to the back of a light. I have a trailer-light right here from Optronics that does feature the weather tight connection point here on the back of it. Very simple. All you do is you would place the plug directly into that connection point. It's got this little tab right here that's going to engage the clip, which is going to keep it nice and secure inside the connection area there. When you're ready to disconnect it, you lift up on that tab to release it and then you simply pull it out of the connection point. That's going to do it for today's look at the Optronics 3-wire Pigtail.

Customer Reviews

3-Wire Pigtail for Optronics Trailer Lights - Weathertight Plug - 10" Lead - A45PMB

Average Customer Rating:  4.8 out of 5 stars   (53 Customer Reviews)

This 3-wire pigtail has a female plug on one end that pairs with the weathertight connection on the back of your Optronics light. Color-coded wire lead is 10" long. Designed specifically for lights that provide stop, tail, and turn functions.


Replaced my vintage trailer brake lights with the LED Optronics and these pigtails made it an easier install.


I used on my UTV to upgrade lighting.Excellent product,fast shipping and quick response to a question I had. Highly recommend


Shipping has been faster than that website named after that South American river. Orders were 100% correct and they had what the other place didn’t and at a great price.


I purchased a set of Optronics One LED tail lights (stl003rfb) awhile back for an upcoming project. I guess I had not read all the details. There was no wiring pig tail. Not much good without them. Rec'd and installed them this eve.. Brake light bright enough but running light quite dim. Description says "DOT approved", but just for safety I must replace them.
Pigtails were fine though.


The brake lights I ordered online for my travel trailer arrived on time as promised. When the original model I ordered wasn't available for 3 months, they suggested an alternative that was available that fits and works perfectly. Great service.


Exactly what I expected,


These were installed on a box truck that had no side markers. They're extremely bright and make the turn signal quite obvious to drivers in other lanes that cannot see the rear lights. These were a major improvement in safety for our truck.


Great product, Super fast shipping
stretched out a pontoon trailer and added an extra axle. Ordered wheels , tires , tail lights and marker lights from etrailer and received all my order very quick and everything was great. The service is outstanding


when I ordered the trailer lights your website should have told me that it takes 2 different pig tails to hook up the lights .I waited for my order only to find out that I need 2 different sets. Not only did I have to postpone my installation I had to order 2 more pig tails and pay additional shipping. Good product. Maybe show the back of the lights on your view and people will see that you need 2 sets of wiring!


Worked great with the waterproof tail lights. Been in use for over one year with great performance.


One year after installation, these lights are still going strong. The visibility of the brake/turn/tail lights is exponentially greater, especially at longer distances on the interstate and in the daytime.


I plugged it in and it worked. I'm frustrated that it's not included with the lights in the first place.


I love etrailer! I trust their value, choices and customer service which includes product videos. These were on time and the quality was great!


Thanks I received everything and it was what I expected. As I do more work on trailers I will be a returning customer.


I used these instead of the adapters that had two connectors. Cheaper and worked perfect.


Been on my trailer for a year and have had zero problems


It was easy to order, prices were very good, delivery on time. Great company.


The products work perfectly as advertised. Thanks


All products purchased from this retailer have worked as advertised


Electrical pigtail as always part is great quality as described no issues whatsoever


These should have come with the lights..not an extra charge
The Lights were expensive enough


Easy installation and work great!


Excellent products !!! I highly recommend this store!!


Nice i like it, good products , excellent parts!!


Show More Reviews

See what our Experts say about this Optronics Accessories and Parts

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    The # A45PMB uses 20 gauge wiring for all of its' wiring.
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    I went to our warehouse and put together the light, part # STL201RFMB, with both the 3-wire, part # A45PMB, and 2-wire, part # A42PMB, pigtails. With both pigtails plugged in I measured abouut 2-1/4 inches from the front of the light to where the wires enter the connector. You need a little more space than this for the wires to have room to bend so I'd guess you want at least 2-1/2 inches at the very least.
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  • Which Pigtail Is Correct For The Optronics GloLight Taillight STL101RFMB?
    The Weathertight connection on the back of the GloLight LED Trailer Tail Light # STL101RFMB is a newer design from Optronics, so the Three-Wire Straight Pigtail # AL45PWTB is an adapter for the older 3 prong design that is still pretty commonly used on older lights and other manufacturers (see part # A45PB). With that said, as you do not have a need for this adapter, you will indeed need the 3-Wire Pigtail - Weathertight Plug # A45PMB.
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  • How to Determine Replacement Tail Light for 2004 Ranger Boat Trailer
    From what I could find it looks like a 2004 Ranger boat trailer uses round tail lights so something like the Optronics GloLight LED Trailer Tail Light # STL101RFMB could potentially work. Since I don't have specs on your tail lights though I'll need you to confirm the dimensions of your trailer tail lights prior to getting a replacement. The light I mentioned above has an overall diameter of 5-1/2" and the light itself has a 4-5/16" diameter. If you have something different please let...
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  • Add Separate Trailer Turn Signal Lights
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  • Which Connectors are Needed for the Peterson M880-7?
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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B
Employee Amy B
Written by:
Amy B
Employee Wilson B
Updated by:
Wilson B
Employee Ronnie R
Updated by:
Ronnie R
Employee Brian T
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