See what our Experts say about this Peterson Trailer Lights

• Troubleshooting Right Turn Signal Not Working on Trailer Taillights
  First, disconnect the trailer from the tow vehicle so you can check the vehicle side connector. Using a circuit tester like part # PTW2993, test the functions of the connector; specifically check the right turn/brake, to make sure the signal is making it to the connector. If it is not working at the connector, there might be a fuse blown or missing in the power distribution box under the hood. Also, make sure both connectors are clean, and free of any dirt or corrosion. This very well...
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• Troubleshooting Peterson Tail Lights on Boat Trailer That Keep Burning Out
  It really all depends on what trailer light kit you have installed on your boat trailer. Some kits are designed to withstand submersion and other kits aren't. If you can let me know what kit is on your trailer (not just the type of bulbs you use) I can help you determine if it is submersible (granted we carry it). Another thing to note is that you need to make sure your trailer wiring is unplugged before backing the trailer into the water. Even if your lights are submersible, if you don't...
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• Is the Unpainted Steel Light Guard for 440 Tail Light Sold Individually?
  Hey Jeff. The Light Guard item # LG440NP is sold individually. It's just the single steel mounting bracket that can be orientated for either driver or passenger side. The Peterson Square Trailer Tail Lights item # 432200 and item # 432400 are designed to fit it and are sold individually. The Combination LED Trailer Tail Lights item # STL8RB and item # STL9RB are submersible and will also fit the item # LG440NP bracket. What kind of trailer do you have? You can add this information...
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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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• Side Marker Lens Recommendation for a Peterson Taillight Assembly PM440
  The Peterson Replacement Lens # 55-15R is the correct replacement side marker lens for your trailer lights part # 432200. Screw holes are beneath the original tail light side marker lenses for use with this replacement lens. 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.
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• Troubleshooting Left Side Turn Signal Not Working On Trailer
  This sounds like a ground problem on the left side. With the brake lights there is a constant signal coming through which is enough to make the lights illuminate on both sides like they should. But the on/off of a turn signal does not offer enough consistent voltage and makes the problem apparent. First check the grounds on the side where the problem is. Trailer lights usually ground through their mounting studs unless there is an obvious ground wire. In either case, the ground will need...
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• Troubleshooting a Right Turn/Brake Signal on a Pop-Up Camper Trailer
  It sounds like the problem is in the way the your right turn/brake light is grounded. You said that there is power to the fixture which would mean that either the fixture/bulb is faulty or the ground is bad. Try finding a grounding point that is closer to the fixture and attach it there. Any paint-free metal surface that is clean should work well, you might try taking some sandpaper to the area to really clean it up and allow for the best possible contact. It sounds like you already...
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• Bulb Replacement for Peterson # 440 Tail Light
  The Peterson Combination Trailer Tail Light # 432200 uses either 1156 ( # DI49VR ) or 1157 ( # DI79VR ) replacement bulbs. The 1156 are single filament bulbs (marker lights) and the 1157 are double filament bulbs (multi-function).
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• Right Turn Signal and Brake Light Not Working
  It sounds like you either have a blown fuse or a short on the right side turn light and brake light circuit. First, I recommend checking the trailer wire connector on the vehicle. You can use a circuit tester, like # PTW2993, to test that power is coming from your vehicle for the right turn signal and brake light. The green wire on a 4-way connector is the wire that powers your right-side turn and brake light. On a 7-way connector, the right turn and stop light wire is connected to the...
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• How to Replace Blown Tail Light Bulb on Trailer
  There are a wide variety of trailer lights offered and these come with different type of construction. Some lights may not be user-serviceable (such as some LED types and sealed waterproof lights) but usually trailer lights that use standard incandescent bulbs have either a removable lens that either snaps into place or that is held in by screws. Examples of such lights are # ST51RB and # 432200. You can use the link provided to see all trailer tail lights offered. You can use the filters...
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• LED Replacement Trailer Taillights for Peterson 440-15R
  The Peterson lights like the part # 432200 that you have are very standard in dimension. For an LED version of these all you'd need is the # STL009RB for the driver side and part # STL008RB for the passenger side. The mounting stud dimensions match too.
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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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• Tow Dolly Replacement Lights
  For your old car dolly, you may be interested in the Replacement Driver's Side Fender for Roadmaster RM3477 Tow Dolly with Electric Brakes - Metal # RM-922004 and # RM-922005. For similar lights you can use the Peterson Square Trailer Tail Light, 7-Function, Left Hand # 432400 and # 432200. For light from the sides instead of reflectors, you can use the Over 80" Wide, Square LED Trailer Tail Light, 7-Function, 18 Diode, Right Hand # STL2RB and left hand # STL3RB.
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• Right Tail Lights on Trailer and Vehicle Stay Solid When Right Turn Signal is On
  It sounds like you have a short somewhere on your trailer. I would recommend finding which wire is your right turn and brake wire at your trailer connector using a circuit tester like part # PTW2993 and follow that wire back to the taillight. My guess is that you will find a pinched, frayed or damaged section somewhere on that wire. You should also check all connections to make sure they are making good contact. It also would not be a bad idea to check the ground connections to ensure...
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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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• Troubleshooting Pop Up Camper Light Signal Working With One Vehicle and Not Another
  It sounds like your issue is being caused by a weak ground on the pop up camper. The best place to start troubleshooting is with the ground for the right tail/brake light. It is important to ground the light to a spot on the trailer that is clean of paint, dirt, debris, rust, and corrosion. Anything between the ground wire's ring terminal/ground post of the light and the steel frame of the trailer can cause issues with the ground. If the light does have a ground wire, you can also check...
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• Troubleshooting Right Blinker Not Functioning on a Trailer
  The first thing I would do is check the ground on the right tail light assembly. The ground may not be strong enough to carry the amperage.You will want to make sure the ground is attached to a clean metal surface or if the assembly grounds through the mounting hardware you will want to make sure that surface is a clean metal surface too. If that checks out next you will need use a circuit tester like our part # PTW2993 and test the right turn signal circuit on the trailer connector on...
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• Should Both Side of Trailer Lights Flash with Hazard Lights on
  The reason that you would have a fuse just for one side of the signals is because they are for different circuits. You are correct that when you have your hazard lights on both the yellow and green should flash. It sounds like you have done a great job at troubleshooting so if I were you I would check the owner's manual for your vehicle for fuses that would relate to your trailer lights. Sometimes they have the same fuse and sometimes they don't. The only way to know for sure is with...
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• Which Fuses Control Trailer Lights On A 2008 Ford F-150?
  On your 2008 Ford F-150 there is not an in-line fuse for the trailer lights. There is a fuse for the right side trailer lights, # 36, and a fuse for the left side trailer lights, # 42. If both of these fuse are fully seated and not blown then I would check that relay # 10 is functioning as it controls all of the trailer lights. Now I would check that there are no shorts on your trailer that caused the fuse to blow. Chances are there is a bare wire contacting the frame somewhere so you...
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• Replacement Tail Light Cover Needed for a Peterson 440 Trailer Tail Light
  The Peterson DOT AIST 90 that you referenced has to do with how the light was tested, but I do know what light you are talking about. It is commonly known as a Peterson 440 light and we have them listed as part # 432200 for the right hand (passenger) side and part # 432400 for the left hand (driver) side. The only real difference between these 2 parts is that the driver's side light has a clear piece below it that illuminates your license plate. The red lens cover for both lights is part...
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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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• Troubleshooting Left Turn Signal on Wells Cargo Trailer Towed by Dodge Durango
  I would begin by troubleshooting the trailer connector on your Durango. Have a helper activate the left turn signal and use a circuit tester like part # PTW2993 on the connector pin that powers the left turn. If you have a 4-pole trailer connector, it is the pin fed by the yellow wire. If you have a 7-way connector, check the pin in the 9:00 position. With the turn signal active, the trailer connector pin should light up and blink along with the turn signal. This pin should also light up...
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• Right Turn Signal and Brake Lights Not Working on Trailer Towed by a 2006 Dodge Ram 1500
  It sounds like you have done a good amount of testing. Based on what you have said I would check the fuses and/or relays that are related to the trailer wiring on the truck. Use the legend on the lid of the power distribution box to find the locations. Make sure that the trailer is not also having problems by connecting it to another vehicle to determine if the lighting functions work. If they do not, it could be a bad ground connection or a short. Make sure the trailer and vehicle side...
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• Troubleshooting Right Turn Signal/Brake Circuit on Trailer Towed By 2003 Dodge Ram 1500
  The first thing you'll do is determine if the problem lies in the truck or the trailer wiring. Unplug the trailer, and have a helper activate the right turn signal. Use a circuit tester like part # PTW2993 to test the pin on the trailer connector for the right turn/brake signal. If you get signal on that pin while the right turn signal is activated or the brake pedal is pressed, the problem lies in the trailer wiring. If you get no signal, you probably have a blown fuse. The tow package...
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