What is the Function of the Second Yellow Wire on the Curt Adapter C57674
Question:
I just installed a 4 pin to 7 pin connector and brake controller which I purchased from etrailer using your 4 to 7 pin adaptor kit. My question is about this part: Adapter 4 Pole to 7 Pole and 4 Pole w/Test Lamps Item # C57674 I followed your installation video for a 2011 Ford F150. This video has you hooking up the 12 V directly to the battery. Since the connector above has LED indicating which signal are live, the 12 V signal is always on. Im guessing it draws minuscule current but wanted to confirm. Also, there is a yellow wire in the assembly terminated in barrel connector. This isnt mentioned in your video. Im guessing it is redundant with the yellow wire in the 4 pin connector, but could you verify. Thanks
asked by: Dan R
Expert Reply:
The 12V LED indicator light on the Curt Adapter # C57674 that you installed on your 2011 Ford F-150 won't draw enough power to drain your battery as you indicated.
The extra yellow wire is actually an auxiliary pin which most people use for the reverse light function. I know it is a little confusing because there already is a yellow wire, but since there are no laws about what wire needs to carry which function this is just the design that Curt decided to go with.
Attached is a piece of the linked installation instructions which you can find on page 2. These functions are not required to be connected unless you wanted to use those functions.
Product Page this Question was Asked From
Adapter 4 Pole to 7 Pole and 4 Pole w/Test Lamps
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Brake Controller
- Shop: Adapter 4 Pole to 7 Pole and 4 Pole w/Test Lamps
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Shop: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Pole Flat Connectors
- Shop: Trailer Wiring
- Shop: Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Shop: Curt Trailer Connector Adapter - 4-Way to 7-Way RV and 4-Way Flat
- Shop: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Search Results: prodigy
- Search Results: prodigy 3
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Q&A: Recommended 4 Pin Male To 7 Pole Vehicle End Adapter
- Video: BedSlide Classic Sliding Truck Bed Tray Installation - 2023 Chevrolet Silverado 1500
- Video: Trailer Wiring Harness Adapter Installation - 2011 Ford F-150
- Video: Tekonsha Prodigy P3 Trailer Brake Controller Installation - 2022 Ford Expedition
- Video: Choosing the Right Trailer Wiring
- Q&A: Options for Converting Factory 4-Way to 7-Way on 2014 Ford F-150
- Search Results: 4 to 7 adapter
- Q&A: How to Add 7 Way Trailer Connector to Vehicle with 4 Way Connector
- Q&A: Why Would 12 Volt Power Circuit of 7-Way Tester be Active all the Time
- Q&A: How to Wire Up a Curt Brake Controller on a 2011 Chevy Silverado
- Q&A: What do the Codes for the Test Lamps Mean on CURT Adapter 4 Pole to 7 Pole and 4 Pole # C57674
- Video: Curt 4 Pole to 7 Pole and 4 Pole Adapter Review
- Search Results: 90160
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: brake controller
- Video: Choosing the Right Brake Controller
on Trailer Wiring
