How to Splice in Replacement 4-Way Trailer End Connector
Published 05/07/2019
Question:
I need to replace the trailer connector. I have a 4 pin replacement and it has a green, yellow, white, and brown. The damaged plug on the trailer harness has a white, yellow, yellow- brown, and yellow-green. All the videos and diagrams mention a 5 pin or there is a green or a brown wire. I only have yellow wire and 2 other wires that are yellow with green and yellow with brown. Do I splice it in matching the wiring on the plug meaning yellow to yellow, green to YG, brown to YB, of course ground is white. Wasnt sure.
asked by: Jack S
Expert Reply:
To splice in a trailer end connector such as the 4-Pole Trailer End Connector # 18004 or Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector - Trailer End # HM38134 you will need to match the connector to your wires by function. On these connectors, the brown wire is the tail lights, the green is right turn/brake light, the yellow is left turn/brake light and the white is ground and your connector will likely be the same.
Since your damaged plug does not have these you can either trace the wires on your old connector to their function (tail, turn signal, brake light, ground) label them as such so you know what is what, or use a 12 volt battery and jumper wire, applying 12 volts to the wires to see what gets illuminated so you know their function.
I have added a link to a help article on trailer wiring for you that I highly recommend looking at.
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Shop: Trailer Hub and Drum Assembly - 3,500-lb Axles - 10" Diameter - 6 on 5-1/2 - Pre-Greased
- Search Results: trailer suspension parts
- Search Results: trailer jack
- Search Results: wire grommet
- Search Results: trailer axle spindle
- Video: Review of TruRyde Trailer Hubs and Drums - Hub with Drum - TRU58AV
- Search Results: spindle
- Search Results: tesla model 3 hitch
- Shop: etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector
- Shop: Dexter Trailer Axle Beam with EZ-Lube Spindles - 89" Long - 3,500 lbs
- Search Results: k7138400
- Shop: Trailer Hub and Drum Assembly - 3,500-lb Axles - 10" Diameter - 5 on 5 - Pre-Greased
- Q&A: Changing My Hub to a 6 Lug From a 5 Lug With 3,500 lbs Axles
- Video: Talking Pre-Greased Trailer Hub and Drum Assemblies with TruRyde
- Video: etrailer 7 Way Upgrade Kit With Junction Box Installation
- Video: Review of TruRyde Trailer Hubs and Drums - Hub with Drum - TRU86AV
- Shop: TruRyde Electric Brake Assembly - Self-Adjusting - 10" - Left Hand - 3,500 lbs
- Shop: Dexter Trailer Springs Over-Under Conversion Kit
- Video: TruRyde Self-Adjusting Electric Brake Assembly Comprehensive Review
- Shop: Curved Equalizer for 1-3/4" Wide Double-Eye Springs - 7-3/4" Long - 9/16" Center Hole
- Video: How to Install: Curt Trailer Hitch Receiver on your 2024 Chevrolet Equinox
- Video: How to Put On Your Curt Custom Base Plate Kit - 2024 Chevrolet Equinox
- Q&A: No Signal And PWM Fix For Furrion Vision S Camera System Connected To 2022 GMC
- Article: How to Raise Your Travel Trailer Height
- Q&A: What is Required to Change the Bolt Pattern on Trailer Hubs
- Q&A: When Do Brakes Need to be Added to Both Axles of Tandem Axle Trailer
- Q&A: Can Brakes be Installed on Only One of the Axles of a Tandem Axle Trailer
- Q&A: Do I Have to Adjust the TruRyde Electric Trailer Brakes?
- Q&A: Curt Trailer Wiring Install Video for a 2015 Honda CR-V
on Trailer Wiring
