Recommended 4-Way Connection Between Towed Vehicle and Motorhome
Updated 09/18/2017 | Published 09/16/2017
Products Featured in This Question
Question:
Which plug is better for towing a car with a motorhome, four flat or four round? Can you tell me any advantages or disadvantages between the two. Why do most motorhomes use four round instead of four flat? Thanks.
asked by: John
Helpful Expert Reply:
The only real advantage of the 4 round over the 4 flat trailer connector is the clean look of the connection point and the protection from elements when not in use. For instance the Pollak Heavy-Duty, 4-Pole, Round Pin Socket, Concealed Terminals - Chrome - Vehicle End # PK11410 has a clean finished look on the front of a towed vehicle and will protect the connection from dirt and debris with the spring loaded cover.
Many people like the connection between the motorhome using a harness like the Hopkins Nite-Glow Tow Bar Extension Cord w/ Socket - Coiled - 7-Way RV to 4-Way Round - 8' Long # HM47044 or the Hopkins Nite-Glow Tow Bar Extension Cord w/ Sockets - Coiled - 4-Way Round - 8' Long # HM47046. For a 4-way round to 4 way flat connection, you will need the Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat # ADP001.
4 way flat connectors can use the Mounting Bracket 4-Pole Flat # 18144 and dust cover # C58200 which will give a connection that can be used with the Hopkins Endurance, Flex-Coil Trailer Connector Adapter - 7-Way to 5-Way or 4-Way Flat with Nite-Glow # HM47075 or the Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 48" # HM47114.
With any of these connections some dielectric grease like # 11755 is wise to keep moisture and debris out of your connections.
Product Page this Question was Asked From
Pollak Heavy-Duty, 4-Pole, Round Pin Socket, Concealed Terminals - Chrome - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- 4 Round
- Plug Only
- Pollak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Replacement Spring Assembly for Buyers Products EZ Gate Tailgate Assist for Open Landscape Trailers
- Shop: Replacement BullRing Offset Retractable Tie-Down Anchors for Truck Bed Stake Pockets - Qty 2
- Shop: Vehicle Tow Bar Wiring
- Shop: Demco Hydraulic Brake Actuator - Drum - Primed - 12" Adjustable Channel Down - 12,500 lbs
- Shop: UWS Truck Bed Toolbox - 5th Wheel Series Chest - 6 cu ft - Bright Aluminum
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Search Results: trailer hitch
- Shop: Trailer Wiring
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Q&A: Which is Better Roadmaster or Blue Ox Tow Bar
- Search Results: trailer wiring
- Shop: Suspension Enhancement
- Article: How to Measure for Trailer Hitch Drop
- Search Results: trailer tires and wheels
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Q&A: How to Replace a Lance 6-Pin Plug w/ a Standard 7-Way Connector
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Search Results: trailer jack
- Q&A: Replacing 6-Way on Trailer With 7-Way Connector
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Base Plate for Tow Bar
- Search Results: trailer lights
- Video: Breaking Down the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Article: How to Choose the Right Trailer Hitch Class
on Custom Fit Vehicle Wiring
