Recommended 4-Way Connection Between Towed Vehicle and Motorhome
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.
Products Referenced in This Question
Dielectric Grease for Electrical Connectors, 2 oz.
- Accessories and Parts
- Trailer Wiring
- Wiring
- Dielectric Grease
- LubriMatic
more information >
Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 4 Round
- Plug and Lead
- 4 Flat
- Custer
more information >
Curt 4-Way Flat Wiring Connector Cover
- Accessories and Parts
- Trailer Wiring
- Wire Protection
- Connector Covers
- 4 Flat
- CURT
more information >
Hopkins Nite-Glow Tow Bar Extension Cord w/ Socket - Coiled - 7-Way RV to 4-Way Round - 8' Long
- Accessories and Parts
- Tow Bar Wiring
- Adapters
- Extensions
- 7 Round - Blade to 4 Round
- Coiled Cord
- Hopkins
more information >
Hopkins Nite-Glow Tow Bar Extension Cord w/ Sockets - Coiled - 4-Way Round - 8' Long
- Accessories and Parts
- Tow Bar Wiring
- Extensions
- 4 Round to 4 Round
- Coiled Cord
- Hopkins
more information >
Hopkins Endurance, Flex-Coil Trailer Connector Adapter - 7-Way to 5-Way or 4-Way Flat with Nite-Glow
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 0 - 5 Feet Long
- 7 Round - Blade
- Plug and Lead
- 4 Flat
- 5 Flat
- Hopkins
more information >
Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 48"
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 0 - 5 Feet Long
- 4 Flat
- Plug and Lead
- 4 Flat
- Hopkins
more information >
Product Page this Question was Asked From
Pollak Heavy-Duty, 4-Pole, Round Pin Socket, Concealed Terminals - Chrome - Vehicle End
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- Plug Only
- 4 Round
- Pollak
more information >
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