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Peterson LumenX LED Trailer Light - Front or Rear Turn Signal - Oval - Amber
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Peterson

Peterson LumenX LED Trailer Light - Front or Rear Turn Signal - Oval - Amber

Part Number: M821A-7
In Stock
$14.31
Trailer Lights
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6-1/2" x 2-1/4" LED works as either a front or rear turn signal light. Mounts in a cutout with a grommet (sold separately) and works with 3-prong plugs. Great Prices for the best trailer lights from Peterson. Peterson LumenX LED Trailer Light - Front or Rear Turn Signal - Oval - Amber part number M821A-7 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (40)
  • Q & A (0)
  • Videos (1)
  • Photos

Peterson Trailer Lights - M821A-7

Highlights

  • Better Day or Night Visibility: Amber LEDs shine bright as front or rear turn signals.
  • Fewer Replacements Needed: 7-diode LED design draws only 0.24 amps at 12V and lasts longer.
  • Clean, Flush Look: Recessed oval mount sits neatly in a grommet (sold separately).
  • Simple Power Connection: Standard PL-3 plug works with common 3-prong pigtails.
  • Road Legal: Meets DOT and FMVSS 108 standards so your signals stay compliant.
  • Dependable Build: Runs on 9V–16V DC systems and backed by a 10-year limited warranty.
Made in USA

Features to know about

Brighter, More Efficient Lighting: 7-Diode LED Turn Signal

This LumenX oval light gives you bright, reliable illumination with only 0.24 amps of draw at 12 volts. The 7 white LEDs shine through the amber lens for crisp turn or parking signals you can count on. It’s far more efficient and durable than old incandescent bulbs, so you’ll spend more time towing and less time replacing lights.

Clean, Recessed Mount Setup: Fits Tight and Looks Factory

The 6-1/2" long x 2-1/4" tall x 1-7/16" thick design sits flush once installed with a grommet (sold separately). That recessed fit keeps the light protected from bumps and scrapes while giving your setup a clean, finished look. It’s a practical upgrade whether you’re swapping out old lights or adding new ones.

Straightforward Wiring: Standard PL-3 Connection

No complicated wiring here. This light uses a standard 3-prong PL-3 connector that pairs with either a straight (431-491) or right-angle (421-491) pigtail—both sold separately. Just plug it in to your existing harness and you’re ready to go. Compatible with 12V DC systems running between 9V and 16V input.

Built for the Road: DOT and FMVSS 108 Compliant

DOT and FMVSS 108 compliance means this light meets federal standards for visibility and safety. You can drive with confidence knowing it’s designed to perform reliably mile after mile, backed by a 10-year limited warranty.

Specs

Dimensions

  • Overall dimensions (including plug): 6-1/2" long x 2-1/4" tall x 1-7/16" thick

Electrical

  • Compatible with: 12V DC systems
  • Power draw at 12 volts: 0.24 amps
  • Input voltage: 9V - 16V DC
  • Diodes: 7

Warranty

  • Warranty: 10-Year limited warranty

M821A-7 Peterson LumenX LED Trailer Front or Rear Turn Signal - 7 Diodes - Oval - Grommet Mount - Amber Lens





Video of Peterson LumenX LED Trailer Light - Front or Rear Turn Signal - Oval - Amber
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for LumenX LED Trailer Front and Rear Turn Signal Light Review

Today we're taking a look at the Peterson LumenX LED turn signal and parking light. Now this is an oval trailer light that basically serves two functions for your trailer. It serves as a turn signal light and a parking light. We have durable surface mount technology when it comes to the construction of the LED circuit board. That design better withstands shock and vibration and allows improved heat distribution in an overall thinning construction.It does feature LEDs. Now those are sealed so they're not going to be effected from the elements.

LEDs make great replacements for incandescent lights. They last longer. They burn brighter. They're more efficient. With LEDs, you don't have to worry about replacing bulbs or worry about brittle filaments.It has a nice amber lens with a white plastic base.

It is a recessed mount installation with a mounting grommet that is sold separately and available at etrailer.com. Can be mounted in any 360 degree position.When it comes to the wiring, it accepts an industry standard three prong plug, which is also sold separately and available at etrailer.com.It's Department of Transportation compliant. It meets FMVSS 108 requirements for automotive lighting. Product is made in the USA.When it comes to the overall measurements, take a look at those real quick and then we'll hook it up to power so you can see what it looks like with power running to it.Going edge to edge this direction, it's about 6 1/2" long. Top to bottom is about 2 1/4".We're gonna go and hook it up to power.

So I got a three prong plug right here. It simply just fits in the housing, pushes in. Creates a nice sealed design back there.So this right here is the parking light function. You see it sends out a really nice clear, consistent signal. It has a total of seven diodes or seven LEDs, so the multi-diode design really helps optimize the overall light output.

Input voltage is nine volt to 16 volt DC, and our turn signal, you can see how that illuminates brighter when the turn signals are activated.That's gonna do it for today's look at the Peterson LumenX LED turn signal and parking light.

Ratings & Reviews

4.6

40 reviews
5 Stars
(29)
4 Stars
(8)
3 Stars
(2)
2 Stars
(1)
1 Star
(0)
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by:
Exactly what you'd expect. Seems to be a good quality grommet-mount LED light. I used it for a mid-ship marker on a gooseneck.
by:
Very nice lights bright
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2017 Ford Expedition
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I installed these in a trailer for a customer with 12-volt and 24-volt towing vehicles. Now they can pull their trailer with either truck and have working lights.
Ryan profile picture

Ryan

4/3/2026

After a year, these dual voltage lights are working as good as the day I installed them for my customer

Heather A. profile picture
Etrailer Expert

Heather A.

4/3/2026

@Ryan Hey Ryan, really appreciate you coming back with that update. That’s awesome to hear they’re still performing just as well after a full year, especially running in a setup where they’re switching between 12 volt and 24 volt vehicles. That kind of reliability is exactly what you want when you’re setting something up for a customer and don’t want to worry about it later. Sounds like they’ve held up exactly the way they should. Are you still using these on similar builds, or was this more of a one-off setup for that trailer?
by:
etrailer is the best and easiest online vender for trailer parts. These Trailer Lights are great and more importantly they fit, thanks to the help of the etrailer representative.
by:
Extra bright and exact fit.
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2022 Ford F-350 Super Duty
This is a review of etrailer as the product is 4*. The lights came loose in a box so all 4 lights lenses are scratched. When you spend 16-21$ a light you expect them to handle with care but they don’t.
Katrina B. profile picture
Etrailer Expert

Katrina B.

5/13/2023

Yikes, lets get you over to our customer service department for them to assist you.

by:
excellent product, good quality and price
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Easy to install replacement
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Ryan profile picture

Ryan

1/25/2026

Lights work great and look good! Hopefully i dont have to order more anytime soon but if i do, ill definitely buy from etrailer again!

by:
The lights look ok, but I haven't gotten them installed yet. My main complaint is the packaging, because everything I ordered was thrown loose into one box. You need to do better to ensure nothing is damaged during shipping.
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It works fine
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Thanks
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These worked great
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See what our Experts say about this Peterson Trailer Lights


Info for this part was:

Employee Cole B
Installed by:
Cole B
Employee Daron K
Edited by:
Daron K
Employee Brian T
Written by:
Brian T
Employee Justice A
Updated by:
Justice A

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