Parts Needed to Convert a Jeep's 4-Way to a 7-Way
Question:
I am looking to buy a trailer that has the round plug but my Jeep is only wired with the 4 prong flat plug. Is there an adapter that will take the round from the trailer and into the flat on my Jeep?
asked by: Abe S
Expert Reply:
Yes, we have exactly what you need.
To convert the 4-way of your Jeep to a 7-way so that it will adapt to your trailer that has a 7-way you have two options. If your trailer doesn't have brakes all you would need is the # 37185. This would simply plug into your Jeep 4-way and would provide a 7-way for your trailer to connect to.
Now if your trailer has brakes you will need a different part. Instead you will need the brake controller install kit # ETBC7. This comes with everything needed to convert your 4-way to a 7-way plus install a brake controller. I attached installation instructions and an install video for you to check out as well.
For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup.

Products Referenced in This Question
Adapter 4-Pole to 7-Pole and 4-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LED Display
- Up to 360 Degrees
- Tekonsha
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
Adapter 4-Pole to 7-Pole and 4-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
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Jameson C.
4/30/2024
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