Is there a 7-Round Trailer Connector Adapter for Pulling a Trailer w/ LED Lights?
Updated 12/31/2025 | Published 12/09/2025
Products Featured in This Question
Question:
hi was looking at trailer plug adapter 20142. fixes led but i have a large round 7 pin, not one with that plug.. do you sell them by chance?
asked by: william m
Expert Reply:
Hey William. I have a solution for you but there isn't a simple adapter like item # 20142 in 7-way round configuration. Instead you will need to install the Load Resistor Kit for LED Turn Signals item # DI34ZR on all of the taillight circuits of your trailer that have LEDs. LED lights don't draw as much power as incandescent lights so a resistor is added to increase the amperage draw to resemble incandescent lights.
What kind of trailer are you pulling?
You can add this information, along with any other questions you have, where it says Reply to Jerred H.
(click to enlarge)
Continue Researching
- Q&A: Troubleshooting 2022 GMC Sierra 1500 where Trailer Lights Only Work When Headlights are On
- Q&A: Will the Tekonsha Prodigy RF Wireless Brake Controller Work w/a Factory 7-Way on a 2022Mercedes GLS?
- Q&A: Difference Between Tow Ready # 20142 and Curt # C57003 Adapters with Lamp-Out Sensors
- Article: Trailer Wiring Diagrams
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Will Trailer Connector Adapter w/ Lamp-Out Sensor Bypass Work With 2025 GMC Sierra 3500 Ultimate
- Q&A: Troubleshooting LED Trailer Lights Causing Error Code On 2021 GMC Sierra Denali 2500
- Q&A: 7-Way to 4-Way Adapter with LED Resistor Solution
- Q&A: How Many Load Resistors Do I Need To Install Towing LED Boat Trailer With 2024 GMC 3500?
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: What are the Common Types of Propane Fittings Used on RVs?
- Article: 5 Things to Know About Weight Distribution Hitches
- Article: 2005-Current Volkswagen Touareg, Audi, or Porsche Cayenne
- Article: Trailer Hitch Installation Tips
Jerred H.
12/29/2025
Hey William, how did things go with the load resistor kit for your trailer’s LED lights? Were you able to get the lights working properly with your 7-way round plug? Your update could make it easier for others running into the same issue.