How To Wire In A 6-pole Trailer-End Connector
Updated 02/17/2026 | Published 06/09/2024
Question:
Hello, I need to replace a 6 way plug for a homemade trailer. There are 7 wires from the trailer, a red, green, brown, yellow and white wire are connected, a black and blue wire are not. Not sure what to do with only 1 connection and 2 wires. Thank you for your assistance.
asked by: Barry B
Expert Reply:
Hi Barry,
In order to correctly wire in a 6-way connector # RM-910030-8 you're first going to need to know what the functions of those wires are. If your battery is nearby you can use a spare piece of the wire to put 12v power to each wire and see what light turns on and label that wire. White is typically your ground so it is possible that the yellow is just another ground wire for some light or appliance too. If you still have the wires connected to the 6-pole connector then you'll want to take note of each wire's location and compare it to the chart below to determine their functions.
(click to enlarge)
Product Page this Question was Asked From
RoadMaster 6-Wire Trailer Connector - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 6 Round
- Plug Only
- Roadmaster
more information >
Continue Researching
- Search Results: military
- Search Results: roadmaster tow bar
- Search Results: rm15267
- Q&A: What Comes with Roadmaster Falcon 3HD Tow Bar
- Q&A: Tow Bar With Cable Management for 2023 Newmar Kountry Star
- Q&A: Length of Cable In Roadmaster Straight Power Cord for Tow Bars with Cable Guides # RM82BQ
- Q&A: Recommended Parts to Flat Tow a 2017 Ram 3500
- Shop: Vehicle Tow Bar Wiring
- Shop: Roadmaster 80" Coiled Safety Cables - Double Hook - 10,000 lbs - Qty 2
- Shop: Roadmaster Accessory Kit for Falcon Tow Bars - Tail Light Wiring - Safety Cables - Lock Set
- Shop: Roadmaster Falcon 3HD Tow Bar - RV Mount - 2" Hitch - 10,000 lbs
- Shop: Demco Coiled Safety Cables - 14,000 lbs - 86" Long - Qty 2
- Shop: Roadmaster Straight Power Cord for Tow Bars with Cable Guides - 7-Way to 6-Way - 6-Way Socket
- Shop: RoadMaster 6-Wire Flexo-Coil Kit
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Q&A: Base Plates For 2009 Honda Fit & Roadmaster Falcon 2 Tow Bar
- Video: Feature Breakdown: RoadMaster 6-Wire Trailer Connector
- Search Results: air force one second vehicle
- Search Results: demco air force one
- Search Results: air force one
- Search Results: chill cube
- Shop: Base Plate for Tow Bar
- Shop: Trailer Wiring
- Q&A: How to Adapt Roadmaster Nighthawk All Terrain Tow Bar RM-676 for Motorhome with 6-Pole Connector
- Q&A: Do You Carry The RoadMaster 6-Wire Trailer Connector # 910030-8?
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
on Trailer Wiring
Jenny N.
2/17/2026
Hey Barry, how did things go once you tested each wire to find its function for the 6-way connector? Knowing which wire did what could really help others sorting out similar trailer wiring. Your update could make it easier for the next person with the same issue.