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Putco LED Light Bulb Load-Resistors - Aluminum - Qty 2

Item # P230004A-2

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putco accessories and parts  led light bulb load-resistors - aluminum qty 2

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putco accessories and parts lights p230004a-2

  • Lights
  • Load-Resistor Kit
  • Putco
  • Aluminum
Guard against LED-related turn signal problems with these load-resistors. Simple, effective system builds resistance that corrects flash timing, thereby preventing the "hyperflash" phenomenon that occurs with LED indicators. Call 800-298-8924 to order Putco accessories and parts part number P230004A-2 or order online at Free expert support on all Putco products. Guaranteed Lowest Price and Fastest Shipping for Putco LED Light Bulb Load-Resistors - Aluminum - Qty 2. Accessories and Parts reviews from real customers.

Putco Accessories and Parts - P230004A-2

Guard against LED-related turn signal problems with these load-resistors. Simple, effective system builds resistance that corrects flash timing, thereby preventing the "hyperflash" phenomenon that occurs with LED indicators.


  • Fixes hyperflashing or burned-out bulb indicators on turn signals with LED lights
  • Fits tight applications with compact design
  • Installs quickly and easily
  • Works with most import and domestic vehicles
  • Constructed of durable aluminum
  • Includes 2 load resistors - 1 for each turn signal


  • 6 Ohms
  • 50 Watts
  • Lifetime warranty

Because LED bulbs have little resistance on their own, they can create a "hyperflash" situation when used in turn signals. This fast flashing is similar to what your factory signal light does when the bulb is about to burn out. To prevent this phenomenon, install a load-resistor kit along with your new LEDs. Each load resistor will build additional resistance in the line to correct the flash timing of the bulb, resulting in a properly functioning indicator.

230004A Putco LED Light Bulb Load Resistor Kit - Quantity 2 - Aluminum

P230004A-2 Installation InstructionsInstallation Details P230004A-2 Installation instructions

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Customer Reviews

Putco LED Light Bulb Load-Resistors - Aluminum - Qty 2 - P230004A-2

Average Customer Rating:  4.6 out of 5 stars   (11 Customer Reviews)

Guard against LED-related turn signal problems with these load-resistors. Simple, effective system builds resistance that corrects flash timing, thereby preventing the "hyperflash" phenomenon that occurs with LED indicators.

- P230004A-2

by: Greg C10/28/2013

Sorry it took so long to get back to you, but I finally got to installing one of them. I got these because I had one go bad on my wifes Jeep. We put LED turn signals on and obviousley had to put resistors on. We bought the Recon lights direct from the manufacturer and they told us that they had resistors built into them. They were wrong. I bought the resistors from them and they are JUNK!!! One has already come unwired and quit working. I bought these from you and they already look better built. I installed it and it worked great! I will continue to buy Putco products and will no longer buy Recon products. I have other Recon products on other vehicles and have trouble with them also. Sorry for the rant. Thanks for the resistors and I will probably be buying some more from you pretty soon. Here is a pic of the resistor I put in this afternoon. 105401

- P230004A-2

by: Roxane10/29/2017

We are towing a new flat bed utility trailer that has LED lights, with a 2013 Ford Escape. The Escape would throw a bulb error every time we put on the turn signals. Additionally, the lights on the trailer were pulsing continuously. We installed these on the trailer and now everything works perfectly! No more bulb error messages from the Escape and the lights illuminate as they should. These resistors were super easy to install, literally took us only a few minutes. 447285

- P230004A-2

by: Keith B.06/23/2016

The folks provided a quality product, metal heat sink casing around resister to disperse heat - much better than the cheap plastic units sold at local retailers for twice as much. Very easy install, only thing I changed was connectors so I could use heat shrink to protect connections from water. 264357


Still perform as well as when installed

Keith B - 06/23/2017


- P230004A-2

by: Doug W.04/14/2014

Easy to install, but these get EXTREMELY HOT....if someone has suggestion on how to keep them cooler it would be appreciated. Otherwise E-Trailer was a great option to purchase these from. 124876

- P230004A-2

by: Hawkeye03/24/2017

Product is good will serve my issue. Received package well protected . Delivery was a bit tardy compared to [sites] services. 358058

- P230004A-2

by: mike w04/23/2014

Arrived quickly and fixed my lighting issue. Thanks for the great service 126970

- P230004A-2

by: Terry R07/23/2015

Quick and easy install to fix the hyper blink caused by LED lights. 213845

- P230004A-2

by: Richard S.11/12/2014

Did not use the product. Returned and got a different product. 160580

- P230004A-2

by: Bob S.11/19/2015

Everything they said it was 232254

- P230004A-2

by: Steve06/22/2017

Worked great thanks 397642

- P230004A-2

by: Troy11/07/2017

Well made. 449960


Ask the Experts about this Putco Accessories and Parts
Do you have a question about this Accessories and Part?

  • Load Resistors Needed When Installing Aftermarket LED Bulbs In GMC Sierra To Prevent Hyperflashing
  • Per Putco, you would need 1 load resistor inline with the wiring harness feeding LED bulb for a turn signal. I believe your Sierra has two bulbs per side, one for the running lamp, one for the brake/turn signal. You only need to install Load Resistors on the circuits feeding the turn signals. I would recommend the Putco # P230004A-2 resistors. Their finned aluminum body will be very effective at shedding excess heat. I have provided a diagram showing how the resistors should be wired.
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  • Are Load Resistors Needed for LED Backup and Brake/Tail Lights
  • When changing from incandescent or halogen type bulbs to LEDs, load resistors are required. For the blinker circuits you can use load-resistors like the Putco LED Light Bulb Load-Resistors # P230004A-2 to prevent hyperflashing of the blinkers. This kit includes two resistors and connectors for installing a pair of bulbs as turn signal lamps. Check out the installation instructions I have attached for part # P230004A-2. I have also included a link to our exterior LED automobile lights...
    view full answer...

  • Trailer Turn Signals Hyper Flashing After Replacing Incandescent Tail Lights with LEDs
  • When a tow vehicle is equipped with a bulb-out sensor, the addition of LED trailer lights can cause hyper flashing like you describe because LEDs draw much less power than incandescent bulbs do. This fools the bulb out sensor into thinking that a bulb is burned out. If the circuit was drawing too much power, a heavier duty flasher would be needed, but in this case you have the opposite. You can install load resistors like part # P230004A-2 on the right turn/brake and left turn/brake...
    view full answer...

  • LED Lights Flash on Trailer Towed by a 2008 Land Rover LR3 Using Adapter # C57003
  • The 7-Way to 7-Way adapter, # C57003, is designed to work on German vehicles like the VWs, Audis, and so on to deal with a bulb-out sensor issue present on those vehicles. It may not work the same for other applications like on your Land Rover. If the LED lights on the trailer are not providing enough power draw on the system you can try installing some load resistors on each of the lighting circuits (right turn/brake lights, left turn/brake lights) behind the trailer connector. You...
    view full answer...

  • Load Resistors to Allow Wiring Harness to Operate with LED Trailer Lights
  • LED type trailer lights use very little power, about one-tenth the amount required by standard incandescent light bulbs. This can cause some wiring systems to not "see" the trailer lights because their current draw is so low. In some cases a wiring harness may not function correctly if used with LED lights unless a load resistor is installed at each LED light unit. We offer 2-piece ceramic load resistor kit # P230004C-2 and 2-piece aluminum resistor kit # P230004A-2. Either will allow...
    view full answer...

  • Available LED-Type Trailer Lighting to Convert from Incandescent Bulbs
  • Converting trailer lighting to the LED-type is a great way to both increase visibility and reduce power demand on the vehicle wiring system. LEDs are roughly 10x more energy efficient than incandescent lights. In some cases the trailer turn signal lights will need a load resistor to prevent what is called hyper-flashing (overly fast blinking of the turn signals) but this is something you really have to try to know. The other lighting circuits definitely will not need a load resistor...
    view full answer...

  • LED 3157 Bulb Recommendation for Converting from Incandescent to LED
  • For a red LED version of the 3157 bulb you have on your vehicle I would recommend the Putco Plasma 3157 part # P243157R-360. The price is available at the link below, these are sold in pairs. If the bulbs you are replacing carry the blinker circuit you will need to install a load resistor like the # P230004A-2 sold in pairs on each circuit there is an LED that blinks. Otherwise they will hyperflash, meaning they will blink very fast. If these bulbs aren't on a blinker circuit the load...
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  • Should Load Resistors be Grounded to the Vehicle Frame or an Existing Ground Wire
  • The ideal location to ground anything would be to the metal frame of the vehicle in the nearest corrosion free bare metal surface. However, if there is a ground wire near by you could try it out and see if it offers a sufficient ground. If you still get hyper flashing then a better ground location could be needed. I have included a link to the installation details for the load resistor # P230004A for you. These resistors are also available in a pair, # P230004A-2.
    view full answer...

  • 2011 Range Rover with Trailer Assist Does Not Recognize Trailer with LED Tail Lights
  • First an adapter with load resistors that goes from a 4-Way flat to a 4-Way flat is not available. You would need to use the 7-Way to 4-Way adapter, # TR20141 for that. This particular adapter was designed to offer enough resistance when towing a trailer with LED lights so you no longer get those errors. The other option is to install load resistors, like # P230004A-2 for a 2-pack, in line on the trailer wiring for each circuit.
    view full answer...

  • Is Load Resistor Required for Converting 3rd Brake Light to LED Bulb
  • Load resistors can be required for LED lights when the vehicle wiring is unable to recognize the light's presence due to its very low power draw. Standard incandescent bulb lights draw more power and so they are more easily "seen" by the wiring harness. Load resistors like # P230004A-2 drain away some power and so they mimic the characteristics of incandescent lights. You can try a load resistor to see if it corrects the blown fuse for your IOD display but usually it is only blinking...
    view full answer...

  • BMW X5 Bulb Out Warning Still Happens Using Special Adapter TR20141 for Trailers with LED Lights
  • If the adapter, # TR20141, is still causing the bulb out sensor when towing a trailer with LED lights then there is another option. You can install load resistors, # P230004A-2, on the trailer wiring. The load resistors will need to go on each circuit so you will need at least 3 for a 4-Way trailer connector for the basic lighting functions. These will provide more draw on the system and the vehicle will not think there is a bulb out. The other possibility is that there actually is...
    view full answer...

  • 2013 Ford Escape Shows Bulb Out when Trailer with LED Lights is Connected
  • The bulb out error or hyper flashing can occur any time LED lights are used in place of incandescent lights. Usually this issue is found on vehicles but has been know to occur on trailers as well. You will need to make the tow package wiring on the vehicle think there is more draw from the lights. To do this I recommend using load resistors on the affected circuits. If the trailer lights use the 3-prong plug like # ST70RB you can use # ALEDRST1B. Or you could install resistors such as...
    view full answer...

  • Can Load Resistors be Used on a Mercedes with a CANBUS Electrical System
  • Load resistors such as # P230004C-2 just create more current draw on a circuit. The constant draw should be compatible with the CANBUS system on your Mercedes but it is possible that the vehicle computer may consider it a short and throw a warning. They are used primarily to fix hyper flashing on LED lights used in the turn signals. Both ceramic and aluminum load resistors are going to generate heat. Aluminum dissipates the heat a little better. The aluminum set is # P230004A-2. If...
    view full answer...

  • How to Correct Flashing LED Trailer Lights Using Load Resistors
  • High-efficiency LED type trailer lighting pulls much lower current than standard incandescent lights and sometimes this can cause odd behavior from the wiring harness when it cannot recognize the connected trailer. There's a simple solution to this issue: installation of a load resistor at each affected LED light. Load resistors mimic the electrical signature of incandescent lights to let the trailer wiring work as intended. If your trailer lights use a PL-3 type connector you can...
    view full answer...

  • Solution for Rapid Signal Flashing on Utility Bed with LED Lights
  • It sounds like you may just need to install some load resistors on the turn signal circuits of your truck. The hyper flashing you are experiencing occurs sometimes with LED lights because they only draw a fraction of the power that a standard incandescent does. On vehicles with a bulb-out sensor, they are essentially tricked by this and think that a bulb has burned out, which in turn causes the rapid blinking. The same symptom occurs if you were to have incandescent bulbs and they were...
    view full answer...

  • Trailer LED Tail Lights Light Up Dim When Connected to Vehicle with Curt Trailer Wiring Harness
  • Curt trailer wiring harnesses like # C56378 sometimes have the exact issue that you are describing. The issue is that there is some bleed over power from the powered converter that can light up LED lights ever so slightly. This is usually not an issue because at night you would have the running lights on any way and during the day it should not be all that visible. The reason that it happens with LED lights and not incandescent lights is that the LED lights draw much less power to light...
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  • Load Resistor Recommendation for a Vehicle with LED Lights and Hyperflashing
  • The hyperflashing you are experiencing is most likely related to the LED lights you have installed on your vehicle. LEDs are notorious for causing hyperflash when used on turn signal circuits of a vehicle. Typically installing load resistors on the circuit like the part # P230004A-2 will fix the problem. To see how they install check out the picture I attached.
    view full answer...

  • How to Fix Check Trailer Wiring Message on 2015 Chevrolet Silverado and Trailer with LED Lights
  • The Curt 7-Way Trailer Adapter # C57003 is designed to be used on Volkswagens, Audis, and Porsches but we have seen some success on other vehicle makes. I can't say for sure but it might solve your issue. The adapter uses load resistors which creates more power draw. Another possible solution is to install load resistors # P230004A-2.
    view full answer...

  • Resistor Used for LED Fog Lights Does Not Last Long
  • I think I have a better solution for your LED lights. Instead of reducing the current (and it would be stepping down the amperage, not the voltage) you could put more load on the system so that the LED lights will work. You just need some load resistors such as # P230004A-2.
    view full answer...

  • Turn Signal Hyperflash on Tow Vehicle Towing a Boat Trailer
  • It sounds like you have experienced a hyperflash condition. LED lights will flash like that because they do not provide enough power draw for the system to recognize them. Also, you should not mix LED and incandescent lights on a trailer. If the vehicle has LED lights and the trailer has incandescent lights then as long as the vehicle has the proper converter installed or has the factory wiring harness it should be fine unless it is the factory harness on a German vehicle like a BMW...
    view full answer...

  • How Much Voltage and Amps is the Roadmaster Heavy Duty Diode # RM-690 Rated For
  • The heavy duty diode # RM-690 is rated for up to 120 volts at 24 amps but for your application the circuit is only going to be pushing 12 volts through it. Since LED lights draw a fraction of the power of incandescent lights there should be no brightness issues. If for some reason the LED lights cannot draw enough power through the diode you may need to add load resistors # P230004A-2, in between the lights and the output side of the diode. This will create more load so full power can...
    view full answer...

  • Which Putco Type 3157 LED Bulbs to Replace Standard Bulbs in 2007 Dodge Nitro
  • When changing from incandescent or halogen type bulbs to LEDs, load resistors will be required. The Putco type 3157 LED bulbs in Amber color for your 2007 Dodge Nitro are part # P233157A360. These are sold as a set of two. Use of these bulbs in your Nitro requires load resistors on each turn signal circuit. We offer a pair of resistors as part # P230004A-2, which includes 4 quick-connect clips. Installation instructions are included. These 360-degree-radiating amber LED bulbs appear...
    view full answer...

  • Troubleshooting LED Bulbs Not Working After Replaced Old Lights
  • The first thing I would look at is the number on your old tail light versus your new ones. There is a 4 digit number and you will need to make sure the numbers are the same from old to new. For example on a Putco Pure premium 3157 LED bulb # P233157W360, make sure your old tail lights have the number 3157 too. You may need load resistors like the Putco LED # P230004A-2 since LED lights draw much less power than incandescent lights. Most likely your LED lights are not drawing enough...
    view full answer...

  • Vehicle Bulb Out Sensor Goes Off When Towing a Trailer with LED Lights
  • The bulb out sensor indicates that you may have a BMW, Volkswagen, Porsche, AUdi, or other German vehicle. These vehicles have a problem when towing a trailer with LED trailer lights. The problem is what you have described. The LED lights do not draw enough power (in this case it is just the blinkers) and it makes the vehicle think there is a bulb out. The fix is to use a special adapter, # TR20141, which will eliminate this problem because it adds load resistors that increase the draw...
    view full answer...

  • Which Load Resistor to use on a Ford Transit Connect with a Trailer with LED lights
  • We carry two different load resistors that will allow you to use LED trailer lights with your 2014 Ford Transit Connect. Both products are manufactured by Putco. The real difference is Watts rating and material the resistor is made from. The Putco LED Load Resistor # P230004C-2 is a ceramic resister that is rated up to 25 Watts. the Putco LED Load Resistor # P230004A-2 is made from aluminum and is rated up to 50 Watts. The difference is # P230004A-2 will keep cooler and take...
    view full answer...

  • Trailer Lighting Problem Causing Directional Signals on 2011 Ford Taurus to Rapidly Flash
  • Needing a heavy duty flasher might be a possibility, but before going that route, do a bit of troubleshooting. Check your ground connections. A poor ground connection can cause any number of problems with trailer lighting. On the converter box, there is a white ground wire with a ring terminal on the end of it. Make sure that this wire is securely attached to clean metal. Also, check the ground connection on the trailer itself. Trace the white wire rearward from the trailer connection....
    view full answer...

  • Need to Separate My Turn Signals and Brake Signal on a 2008 Dodge Ram 2500.
  • Although typically used to convert a system from a tow vehicle to a towed vehicle, the use of the Vehicle to Vehicle Taillight Converter, # 118158, would work for you. When a vehicle has a combined system, both the left and right turn signal wires also carry the brake signal. With a separate system, the brake light signal is broken out onto it's own circuit. This converter will allow you to convert your combined taillight system to a separate taillight system on your 2008 Dodge Ram. The...
    view full answer...

  • LED Trailer Lighting Kit and Load Resistors to Prevent Hyperflashing
  • We do offer complete LED-type trailer lighting kits such as Optronics # TLL9RK. This DOT-approved kit includes everything you need for a trailer under 80-inches in width. It's included 4-pole harness is 25-feet long. LEDs use so little power that they can sometimes confuse a wiring harness. The simple fix to this issue is to use load resistors. These add resistance to the system and fool the harness into thinking it is sensing the resistive load typical of a standard incandescent bulb. Load...
    view full answer...

  • Trailer LED Light Load Resistors for Wiring Harness in 2014 Ford Escape
  • If the factory trailer wiring harness in your 2014 Ford Escape does not function correctly with the LED lights on your trailer you can correct this issue by installing load resistors at each of the trailer lights. You do not need to replace the factory harness unless it has damage. Usually factory converter harnesses will be installed under dash. High-efficiency LED lights can have this issue because they draw so little power. That can cause the converter to not sense them correctly. The...
    view full answer...

  • Is a Special Converter or Adapter Needed to Tow a Trailer with LED Lights
  • Most aftermarket trailer wiring harnesses are compatible with LED trailer lights but I would need to know the year, make, and model of the vehicle to be sure. Factory tow package wiring usually works fine but German vehicles (Volkswagen, BMW, Audi, Mercedes) can have issues since the LED lights draw far less power than incandescent lights. I have heard of only a few cases of other vehicle manufacturer tow package wiring being an issue with LED lights. But even if the low power draw causes...
    view full answer...

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Info for this part was:

Expert Research:
Jameson C
Expert Research:
Adam R
Video Edited:
Dustin K
Installed by:
Hayden R
Updated by:
Sarah W

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