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Peterson Combination Trailer Tail Light - 7 Function - Incandescent - Square - Driver Side

Peterson Combination Trailer Tail Light - 7 Function - Incandescent - Square - Driver Side

Item # 432400
Our Price: $10.51
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4-3/4" x 4-1/2" Square. Incandescent trailer light serves 7 functions: stop, turn, tail, rear reflex, side reflex, side marker, and license plate light. Stud mount to trailer. Quick-connect wire inserts. (1) 1157 and (1) 1156 bulbs. Great Prices for the best trailer lights from Peterson. Peterson Combination Trailer Tail Light - 7 Function - Incandescent - Square - Driver Side part number 432400 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (309)
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Peterson Trailer Lights - 432400

  • Tail Lights
  • Square
  • Incandescent Light
  • Red
  • 4-3/4L x 4-1/2W Inch
  • Surface Mount
  • License Plate
  • Rear Reflector
  • Side Marker
  • Side Reflector
  • Stop/Turn/Tail
  • Non-Submersible Lights
  • Peterson

4-3/4" x 4-1/2" Square. Incandescent trailer light serves 7 functions: stop, turn, tail, rear reflex, side reflex, side marker, and license plate light. Stud mount to trailer. Quick-connect wire inserts. (1) 1157 and (1) 1156 bulbs.


  • Combination trailer tail light serves 6 functions on trailers under 80" wide
    • Stop, turn, tail, rear reflex, side reflex, and side marker
    • License plate light illuminates your trailer's license plate
  • Built-in rear and side reflex reflectors removes the need for a separate reflector
  • Incandescent bulbs can be easily replaced
  • Durable molded housing with screw-on lens
  • Red lens and clear lens over incandescent bulbs
  • Compatible with 12V DC systems
  • Stud mount to trailer with included 1/4" mounting studs
  • Quick-connect wiring inserts allow for push-in connections
    • Grounds through mounting hardware
    • 2 Additional ports allow for extra lights
  • DOT compliant
  • Made in the USA


  • Configuration: driver side
    • Passenger side: 440 (sold separately)
  • Dimensions: 4-3/4" tall x 4-1/2" wide x 2-13/16" thick
  • Distance between mounting studs (center on center): 2"
  • Bulb type:
    • Stop/tail: 1157
    • Turn: 1156
  • Power draw at 12.8V: 2.2 amps
  • 1-Year limited warranty

Manufacturer Cross Reference

Light will work as an exact replacement for:

Grote # 52312

Truck Lite # 534D and 80324R

Optronics # ST9RB

Peterson 440L Under 80 Inch Trailer Combination Tail Light Dimensions

M440L Peterson Combination Tail Light for Trailers Under 80" Wide - 7 Function - Incandescent - Square - Red Lens - Stud Mount - Driver Side - Left Side

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Peterson Combination Trailer Tail Light - 7 Function - Incandescent - Square - Driver Side - 432400

Average Customer Rating:  4.8 out of 5 stars   (309 Customer Reviews)

4-3/4" x 4-1/2" Square. Incandescent trailer light serves 7 functions: stop, turn, tail, rear reflex, side reflex, side marker, and license plate light. Stud mount to trailer. Quick-connect wire inserts. (1) 1157 and (1) 1156 bulbs.




Hi Ashley E.

You probably don’t
remember, but you ask me to do a review and send a photo of my trailer light purchase on your invoice #108377365 Of 9/4/019.

Find a photo attached. This is a ‘Rat Rod’ pickup and not quite done, but I finally did get the lights mounted and wired. They worked perfectly, and I am very satisfied.

I will send you another (and a much better) photo when a get the bed for the Rat Rod built.


Edith H was excellent taking my order and following up with my order process. I highly recommend etrailer.

Scott M.


Still works great. The Michigan UP weather can really be hard on outdoor equipment, but this product has withstood the elements.


We broke the original Peterson lights on the trailer after 20 yrs and chose to replace them with Peterson lights again as we never had any issues with the original one and the wiring was a plug and play which made it easy to install.





I ordered 2 Peterson tail lights to replace the broken ones on my Kendon stand-up M/C trailer. They were exact replacements and the job was over in twenty minutes. Very easy. That was only the product. What was really exceptional was the service. When I placed the order I was expecting a two week or longer turn around as so many other online dealers take, but e=trailer shipped my order immediately and I had them on the fourth day. What great service!!!I would highly recommend this company for any of the products they sell. Thanks

Bob P.


Just great. No problems


They Look Good and Work Great! Thanks

Eddie D.


good having problems with one. I got to check it out.


Item 432400 is exactly as described delivered as promised and was able to order from a customer service representative who was very helpful knowledgeable and professional I will use your service again


My old round metal Peterson tail lights got to be very old a dim, had them since 1987.
replaced with these new square ones and they are so much brighter.
Great price too.

Greg D.


Lights are working with no problems after one year.


As always, I very satisfied with my purchase from, etrailer. I have bought from them before and always get great service and products. Of course Ole George, keeps me up to date on my items and information about shipping, and even lets me know when it is delivered. I think he has a spy cam somewhere so he can watch over the items. Not sure how he does it. etrailer has to be a family owned business, as they care for the customer like family. Many thanks to all the etrailer employees for making my purchases a great experience! P S They didn't pay me to write this.

Etrailer Expert

Rachael H.


Donald, thanks for your review. I did want to let you know that YES we are a family run business and we do have info about the history of our business on our site if you would like to check it out.


Delivered as promised at a competitive price i will use your service again


I installed the units within 30 days of receiving them and once of the units when out about 4 months ago. I thought about contacting you to complain or check warranty but never did. Thanks for your follow up as it gave me the chance to bring you up to date. If you wish to replace the one that failed I would be most pleased. Thanks

Etrailer Expert

Mike L.


Its pretty rare for a taillight to go bad within 2 months of installation. Id recommend doing a little troubleshooting. Use a circuit tester like # PTW2993 on the wires leading to the lamp as each lighting function is activated. If you dont have a circuit tester, you can always swap the non-functioning lamp to the other side of the trailer. If the lamp works on the other side, then its a wiring issue, not a defective lamp. Its also possible that the bulb is bad. This lamp uses a readily available 1157 bulb, which we offer as part # A1157B. If its not a wiring issue, then the lamp is defective.


The lights arrived in a timely fashion at a very good price. Upon opening the box, I was initially puzzled by the lack of wiring pigtails. Darn, I guess I need to order a plug; OK, it's been a long time since I changed my trailer lights. Oh, but after a little research, such was not so. The trailer wires simply pressed into the rear of the light housing and self tapped - how simple. Maybe, a sliver of paper instructions enclosed would have been in order. Maybe not.....
Overall, I am most pleased with my dealings with eTrailer.


I replaced both lights on my small boat trailer. I had never seen this type of electrical contact before but the wires were still attached to the existing Peterson light so I copied that connection, which was very easy. I would suggest that Peterson include a simple diagram with its trailer light for those of us unfamiliar with that connection.

They appear to be durable high-quality products with a reasonable price.


I have used Peterson lights for many decades. I stick with them because they maintain a decent quality level. But, I ordered a driver side light and a passenger side light about two weeks apart in two separate orders. On both lights, 1 or both of the threads on the 1/4" X 20 mounting bolts were damaged right on the end of the bolt. This made starting the hex nut impossible. I happened to have a thread file which allowed me to clean the threads up and solve the problem. It just seemed odd to me that this issue occurred. I gave them a 5 star rating anyway because I know Peterson builds a good product and I have used these particular lights for many years without issue.


I purchased these lights as replacements for my utility trailer. As with most trailers of this type, grounding is usually a problem for one reason or another. These lights should solve any grounding problems because they eliminate the grounding wire and are grounded directly to the trailer frame using the mounting bolts. Maintenance will easy, as well.....the lenses and bulbs can be replaced simply by removing 4 screws. I'll admit, I'm a little skeptical of the way the wiring to the lights are attached.....bare the wire and insert it into a hole in the back of the light where they are anchored by an onboard clip. If this works as described, that will make these lights the go-to replacements. As easy as it gets.


Looks good although right around the edges of the lens there are tiny gaps, which I would think will let water in (and out). Haven't installed it yet but with the easy to use wiring connections, no soldering!



Still doing good. Sealed up the gaps and havent had any problems.


The old light broke, hitting something. this was a perfect replacement. everyone else forces me to buy a pair of lights but here I was able to buy exactly what I needed and wanted. it was a perfect fit and therefore very easy to install in just a few minutes.



Excellent after a full year or use. still looks new and works perfect


After about 10 months on my little home-built trailer (using it maybe once a month for a few hours), the side reflector piece just fell off somewhere on the road. Now I have to order a new tail light. sigh. A DIFFERENT brand.


Bought only one because it was broken against a wall backing, The local parts house had one to get trip finished. Found later the bulb socket twisted completely out taken bulb out to dielectric grease the base. so parts house cheap PETERSON was my original lighting as a new trailer. Thanks etrailer.


These lights were purchased to replace the really old ones on a utility trailer. They are excellent value for the price, well made and nicely finished, I particularly liked the fact that you do not have to splice wires together as the lights have 2 holes into which you just push the wires, installation was easy, just 2 bolts on each light.
As usual service from etrailer is great.


Arrived quickly. The bulbs are a little difficult to remove from these lights - I'll find out if I reinstalled the bulbs correctly when I finish the wiring. These are what I needed for my utility trailer. Now I just want the LED lights to come down in price.


Just rewired a cargo trailer I bought that the lights were always going out. Found 20 butt connectors the guy used no wonder they worked off & on. Now with two new tail lights & new wiring with a straight connection everything works like it should. Everything I have bought from etrailer has been good quality & fast shipping.



Have Peterson stop lights that have been on my trailer for 16 years. Had to replace the left had 7 function tail light because I broke it. It did not fail. Etrailer had the replacement light in stock. It probably took less than 30 mins to install the light due to its quick connect design.


I purchased a taillight to replace a broken one on my utility trailer that I was repainting and installing a new wooden floor. The taillight was as described and the shipping was fast. Great business to purchase from.


I ordered replacement lights for my trailer from etrailer. The lights arrived in less than a week. I installed the lights on the following weekend. The lights I order were the exact fit as my old units so the replacement was quick and easy.


Show More Reviews

See what our Experts say about this Peterson Trailer Lights

  • How to Wire a Trailer Light with 1 Wire
    It sounds like the light on your trailer is either missing a wire or it was only designated for one tail light function. If the light does not look old or damaged, I would guess that it is just a clearance light and should be connected to the running light circuit. If this is the case, it should not function as a brake light as well because it was not designed to do so. The brake lights and tail lights run on different circuits and they were not designed to connect to the same wire on a...
    view full answer...
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  • How Does Wiring Run to the Peterson Trailer Light part # 432400
    Essentially what you said is how you run wire to the part # 432400. It's a pretty strange method I will agree, but basically you just insert the wires into the holes on the back of the light assemblies and they socket grabs the wire. If you fast-forward to the 2:30 section of the video I attached you will see our installer use this method. It's really pretty nice since you don't have to splice anything or use any soldering. If you do pull hard enough you would be able to remove the wire,...
    view full answer...
  • Replacing Bulb on Peterson Square Trailer Tail Light # 432400
    To change the bulbs in Peterson trailer tail light # 432400 you will first remove the main lens which is held on by 4 screws. The main bulb can be removed by pushing down and rotating the bulb counterclockwise. There is a diagram on the inside of the case that explains this and it says turn it 30 degrees then pull up. I had to turn it several more times when I played with the light so it probably varies slightly. To install a new 1157 bulb # 30-90-157 you will line up the lower nub on...
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  • How To Install The Peterson Square Trailer Tail Light Part # 432400
    I am assuming you are referring to the Peterson Square Trailer Tail Light part # 432400. If this is the case, on the back of the taillight assembly, there are 4 wire holes for each function located at the top of the tail light assembly. The top two holes are designed for a larger gauge wire whereas the bottom two are designed for a smaller gauge wire. In order to remove the old wires, you will first need to unhook the trailer connector from the vehicle. You can then insert a small screwdriver...
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  • Replacement Side Marker Light For Older Peterson Trailer Tail Light On 1990's Sea Lion Trailer
    It looks like your light uses the 67 Bulb # 67. This bulb has a base diameter near 3/4" and uses a single contact base with ground lugs that would catch in the arms of the base.
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  • Choosing and Installing a Replacement Peterson 7-Function Square Trailer Tail Light
    The Peterson 7-Function Square Trailer Tail Light # 432400 shown in the linked photo uses press-to-release wire connectors. The arrows in the photo show the lower row of holes that need to be pressed with a pin, nail or similar item to release the wires from the upper holes. If the old light is badly corroded or if the release points do not work you can simply snip off the wires with wire cutters as close as possible to the light's housing in order to keep as much as possible of the trailer...
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  • Differences Between Peterson 432200 6-Function and 432400 7-Function Trailer Taillights
    The driver's side lamp, part # 432400 has an additional function that the # 432200 passenger side lamp does not. The driver's side features a clear lens on the underside of the lamp housing that would illuminate a license plate mounted underneath it. I've provided a photo showing the difference. You would indeed want to purchase one of each. I've linked to a product video featuring both taillights.
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  • Left and Right Hand Trailer Tail Light Recommendation
    For the matching left hand tail light to go along with the Peterson Square Trailer Taillight part # 432200 that you referenced you will want the Peterson Square Trailer Tail Light # 432400. The # 432400 has a light on the bottom of the assembly to illuminate the license plate. I attached a review video.
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  • Replacement Light For Peterson 440 151 Trailer Light
    The replacement lens for the 440-151 light you have is not a lens we carry. You may want to consider a replacement light. You would need part # 432200 for the right side or part # 432400 for the left side. The cost for these is not much more than a replacement lens. The Peterson 440 series lights now have screws for the lens so it looks like they have changed the design of the lights.
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  • Economical Trailer Taillight Recommendation for a PWC Trailer
    The trailer taillight part # 432200 would work well for you. It is designed for exactly what you are looking for. The additional functions that the light has are for the reflectors on the sides of the assemblies. For the left hand side you would also want the # 432400. I attached a help article on trailer wiring for you to check out as well.
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  • Why Are There 4 Quick Connect Wire Ports On The Peterson Combination Trailer Light
    The Peterson Combination Trailer Tail Light Passenger Side # 432200 and Driver Side # 432400 include four quick connect ports since the top two holes are designed for larger gauge wires where the bottom two holes are designed for smaller gauge wires. The extra two holes can also be used to add additional tail lights if you desire. I included a video of the Peterson Combination Trailer Tail Lights for you to take a look at.
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  • How Does Wiring of Roadmaster Trailer Tow Dolly Fender Connect to Rest of Dolly
    Sounds like you might be replacing the fender of your Roadmaster tow dolly which has the lighting and wiring integrated into it. The replacement fenders for the Roadmaster dollies like the part # RM-921003 use a standard 4-way trailer wiring connector to connect to the rest of the wiring of the dolly. In the picture I attached you can see the 4-way.
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  • Recommended Gauge Wire To Use With Peterson Combination Trailer Tail Light
    You won't need to re-wire the tail lights. The 440-15L has been replaced with the Peterson Combination Trailer Tail Light - 7 part # 432400 and part # 432400 which does work best with 18 gauge wire however if you having trouble getting the wires to catch in the sockets you can strip more coating away and fold up the ends of the wire to double them before sticking them in the holes on the back of the light. There are also 4 holes for each side of the tail light and you can use the smaller...
    view full answer...
  • Peterson Square Trailer Tail Light Comes with Bulbs
    Yes, the 432400, Peterson Square Trailer Tail Light comes with the bulbs. The side marker bulb is a #194 replacement bulb. Our order number for this bulb is A194B (see link below).
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  • Troubleshooting Peterson 440 Trailer Tail Lights Stop/Turn Signals Not Working
    It sounds like the ground is not your issue on the Peterson Tail Lights # 432400 & # 432200 since your running lights are both working. You will want to start by testing the power using a Test Light # PTW2993 to ensure you are getting power to the tail lights. This will help you to determine if you need to identify why power is not getting to the lights or if it could be a bulb/ground issue.
    view full answer...
  • What Side Marker Replacement Lens Fits the Peterson Square Trailer Tail Light # 432400
    I spoke with my contact at Peterson and the correct replacement lens for the Peterson Square Tail Light is the Peterson Replacement Side Marker # 55-15R. In the manufacturing process, when the lights are being assembled, the side lights are snapped in via machinery, however, when they need to be replaced, they do need to be screwed into place. There are actual entry points for the screws under the lens that you will see when you pop it out. Peterson does not make a snap-in replacement...
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  • Replacement Matching Tail Light for Peterson 440-15 Trailer Tail Lights
    The trailer tail light you are looking for is # 432200. I have included a link to some videos that might help with installation. The matching left hand side is # 432400.
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  • Trailer Tail Light Recommendation that Needs Mounting Studs that are 2-1/2 inches Long
    None of the stud mounted trailer taillights are going to have studs that are 2-1/2 inches in length. What you could do is get a Aero Pro Submersible LED Trailer Tail and License Light # STL37RB and then swap out the carriage bolts that come with it for longer ones that would fit your trailer. The matching other right hand light would be # STL36RB.
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  • Availability of Command Replacement Brake Lens off 1999 Gulfstream Ultra C-Class Motorhome
    Thank you for including a photo; it's always a huge help! I may have a solution for you, but I'm not seeing anything we have as far as replacement lenses that would would for this Command Electronics tail light on your 1999 Gulfstream Class C. Additionally I'm not seeing anything close to your light as an available replacement from Command, so it might be discontinued and the light would need to be replaced completely. If that ends up being the case we do have some options that are...
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  • What Lights Does Light Guard LG440NP Work With
    It is possible the Light Guard - Unpainted Steel for 440 Tail Light # LG440NP will work with your Harbor Freight trailer lights, it just depends on what lights you have on the trailer (we don't have any way of knowing what lights are on any specific trailer). This light guard is specific to Peterson 440 lights, which are the Peterson Combination Trailer Tail Light # 432400 and # 432200. If you aren't sure you can take some measurements, as the Light Guard will fit lights that are 4-3/4"...
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  • Replacement Clip On Side Marker Lens for a Peterson 440 Trailer Tail Light
    The replacement side lens with the clips for the Peterson 440 light is not one that we carry. The replacement light, # 432200 for the right side or # 432400 for the left side, will not cost much more than a replacement lens would. I checked with Peterson and the 440 lights now have screws for that side lens so it would appear they have changed the design.
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  • How Do You Remove The Peterson Replacement Lens, # 440-15R, On The Taillight To Replace A Bulb
    The Peterson Replacement Lens, # 440-15R, is just the replacement lens, so it does not have any screws included. The screws that hold this lens to the taillight are on the taillight and use the holes that are in each corner of the replacement lens. It is a replacement lens for Peterson Square Trailer Tail Light Right Hand, # 432200, and the Peterson Square Trailer Tail Light Left Hand, # 432400. The taillights do come with bulbs.
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  • Lights for the Light Guard # LG440NP Mounting Bracket
    The Light Guard # LG440NP is actually made for the Peterson Square Lights # 432400 (Left Hand) and # 432200 (Right Hand). These lights come with wiring for the side marker lighting. The Light Guard is just a mounting bracket and does not light up the license plate or side marker on its own.
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  • How Does The Light Guard # LG440NP Mount Onto A Trailer
    The Light Guard # LG440NP mounts by using the mounting post on the light, or by welding onto your trailer frame, since your trailer is made from wood you can only mount it by using the mounting post of the light. The Light Guard is made for the Peterson Square Lights # 432400 (left hand) and # 432200 (right hand). These lights come with the wiring for the side marking lighting. I attached a review video link below.
    view full answer...

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Info for this part was:

Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Lori W
Expert Research:
Lori W
Employee Jacob T
Video Edited:
Jacob T
Employee Adele M
Updated by:
Adele M
Employee Brian T
Updated by:
Brian T
Employee Kathleen M
Video by:
Kathleen M
Employee Cole B
Installed by:
Cole B
Employee Randy B
Installed by:
Randy B

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