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Optronics LED Trailer Light - Parking and Turn Signal - Submersible - Surface Mount - Oval - Amber
Optronics

Optronics LED Trailer Light - Parking and Turn Signal - Submersible - Surface Mount - Oval - Amber

Part Number: STL78AB
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$27.49
Retail:$32.73
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7-9/16" LED turn and parking light is waterproof, and mounts to the surface of your trailer with the built-in flange so you don't need to cut a hole in your trailer. Hardwires with the 3-wire pigtail. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Light - Parking and Turn Signal - Submersible - Surface Mount - Oval - Amber part number STL78AB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (57)
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Optronics Trailer Lights - STL78AB

  • Tail Lights
  • Oval
  • LED Light
  • Amber
  • 7-9/16L x 3-5/16W Inch
  • Surface Mount
  • Parking
  • Turn
  • Submersible Lights
  • Optronics

7-9/16" LED turn and parking light is waterproof, and mounts to the surface of your trailer with the built-in flange so you don't need to cut a hole in your trailer. Hardwires with the 3-wire pigtail.


Features:

  • Oval turn signal/parking light
    • Brightens for parking light
    • Flashes for turn signal
  • Waterproof - great for boat trailers
  • White LEDs with amber lens
    • More efficient and durable than incandescent bulbs
  • Polycarbonate lens and housing
  • Surface mount with built-in flange
    • Hardware not included
  • 3-Wire pigtail hardwires to trailer
  • DOT compliant


Specs:

  • Overall dimensions: 7-9/16" wide x 3-5/16" tall x 3/4" thick
    • Light dimensions: 6-1/2" tall x 2" wide
  • Distance between mounting holes (center on center):
    • Horizontal: 7"
    • Vertical: 2-3/4"
  • Compatible with 12V DC systems
  • Diodes: 10
  • Power draw at 12.8 volts:
    • Turn signal light: 0.243 amps
    • Parking light: 0.046 amps
  • Lifetime warranty on LEDs


Optronics STL78 Series Parking Light with Turn Function Diagram

How to Mount Trailer Light

This light is a surface-mount, meaning it installs flat against the surface of the trailer instead of through a cutout. Use the built-in flange with mounting holes to secure the light.



STL78AB Optronics LED Trailer Turn Signal and Parking Light - Waterproof - 10 Diodes - Oval - Amber Lens

Alternate part number: STL-78AB




California residents: click here


Customer Satisfaction Score:


Customer Reviews

Optronics LED Trailer Light - Parking and Turn Signal - Submersible - Surface Mount - Oval - Amber - STL78AB

Average Customer Rating:  4.8 out of 5 stars   (57 Customer Reviews)

7-9/16" LED turn and parking light is waterproof, and mounts to the surface of your trailer with the built-in flange so you don't need to cut a hole in your trailer. Hardwires with the 3-wire pigtail.

by:

Worked great as a replacement for OEM that was no longer available for RV. I also replaced the back side marker lights so the front and back matched.
Pat C did a great job in completing my order with substitution for out of stock resistor.



by:

I mounted these behind a plate to replace the cloudy front lights on my truck. Much better look. They were a little lighter weight than I expected but the build quality looks good.



by:

Replacement for old marker lights that had been discontinued on my class a rv, they look nice are bright and an improvement.

James profile picture

James

5/10/2019

All the products are performing great...........very happy



by:

Quality product. Well built and seem to be quite durable compared to the old single bulb style. I installed these on the sides of my trailer for added visibility at night and also on the back of my van to aid the factory hazard flashing lights.



by:

STL78ab 6-1/2" Oval LED Trailer Turn Signal and Parking Light, Flange Mount, 10 Super Diode: Nothing wrong with this light, but now that I purchased the Miro-Flex Technology with the new generation of LED, its hard to have these as my favorites anymore. I did purchase the Reflective ring to put around it, and I like that product, it adds to this light and coves up the black frame with a highly reflective amber reflective area.



by:

E trailer is a fantastic place to shop. The selection and price and even more important I like to call my orders in , their reps who I talked to were all knowledgeable, very helpful and customer friendly.

I even added to my order a day later and they went the extra mile to ensure everything went out in one package.

These are great lights we want to be sure they had turn signals as when towing it gives us the confidence to know everything is working well.
We needed submersible and LED and wanted to be sure they fit the trailer and would work no matter the surface material, and were easy to install.
I wish I had known of e trailer years ago, I am a customer for life.



by:

Originally purchased this exact part from a large auto parts store for $100 and they needed 2-4 weeks to process this "special order part". I cancelled that order as soon as I found it here for 1/5 of the cost and It arrived really fast, an easy buying process, and the follow up customer service was great. We are installing this part next month. If anything happens to go wrong with the light, I have a lot of faith that CS will be nothing short of amazing in helping us resolve the problem.



by:

My new light.



by:

My lights came in before scheduled, as usual, and were in perfect condition. No defects. I bought two of them, along with a set of the red versions to put on my headache rack. They are very bright, much brighter than my incandescent stock tail lights. The only thing I don't like is how you can see the circuit board in them, but that's only up real close.



by:

Very bright, great quality. Fit my 5th wheel travel trailer perfectly.



by:

These lights are perfect for updating my side marker/turn signal lights. Their slim profile and unique lighting sequence added a sleek and stylish appearance to my RV.



by:

Very nice light. Wouldn't mind if there were amber reflector ovals to go around this, similar to the red reflector ovals.



by:

I have used Etrailer twice to buy lights for custom bumpers, and the service has been excellent. The shipping is super fast and the lights are the highest quality. I will not be using anyone else.



by:

These lights were to replace the ones not working on my boat trailer. You would think that the skeeter dealership could either have them in stock or be able to order. Thank you for being there etrailer.



by:

Great light at a good price but have had several that the wires broke off flush with the housing.



by:

This light is well made, but was a little disappointed because the
"stop-turn" connection only lights the center 4 LEDs brightly. I
was expecting that all 10 would be brightly lit for better visibility
on this setting.



by:

nice flat mount lights bright



by:

I have order bifore from Etrailer corp. And is a real good product they have. That's why I re order some stuff for my business again. And as soon as I need more stuff I will reorder again,



by:

Like the look very slimline. Makes my 2010 car dolly look like a newer version



by:

perfect and bright ... fast delivey ... sale well done

Michael profile picture

Michael

5/28/2015

All are working, just as bright now as when new, do a GREAT job protecting the backside of camper



by:

Awesome! You all are quick! Can't wait to get these installed! Thank you for your superior service and looking forward to doing more business with you all.

Again thanks!



by:

Nice bright lights , I used these and 2 more ( red, for the brake; and and white for the backup) on the back of a 1980 service body truck to replace the ugly ones that came on the truck



by:

I used this light to replace a turn signal on my truck. I needed it to brighter than the stock light and this light dose the job.



by:

Excellent product. Used them as part of a total rewire and re-light of 48' conestoga trailer.



by:

Easy to install. Works and looks great. A lot better than my old incandescent lights.


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Show More Reviews

See what our Experts say about this Optronics Trailer Lights

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    The white wire of the clearance light part # STL78AB that you referenced is the ground, the black is for the running light circuit and the red is for turn circuit. Since standard trailer wiring has the brake and blinkers on the same circuit you'd need a signal converter to separate out just the turn signals for this. For that you'll need the part # 118158 wired up like the picture I attached.
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Info for this part was:

Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Video by:
Kathleen M
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
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Employee Brian T
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Brian T
Employee Amanda K
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