CURT Dual Output Trailer Wiring Adapter | Adds 7-Way RV Blade to 4-Way Flat | 57672
Turn your 4-way flat into a 7-way so you can tow a camper or trailer with electric brakes. The CURT 57672 plugs into your vehicle's 4-way flat socket and gives you two outputs: a full 7-way RV blade socket and a 4-way flat, so one setup handles small utility trailers and larger trailers with brakes.
Why you need it
- Adds a 7-way RV blade: runs tail, brake, turn signal, reverse, electric brake and 12V auxiliary circuits, the standard plug on campers and travel trailers.
- Keeps your 4-way flat: a second output for small utility trailers and bike rack lights.
- Brake controller ready: pair it with the CURT Echo Wireless Brake Controller, which plugs straight into the 7-way with no dash wiring.
- Clean, protected install: slit loom keeps the wires contained, dust covers keep both connectors clean, and the metal bracket mounts it securely to the vehicle or hitch.
Specifications
- Part number: CURT 57672 (UPC 612314047048)
- Input: 4-way flat vehicle socket
- Outputs: 7-way RV blade and 4-way flat
- Includes: adapter, dust covers, mounting bracket and hardware
- Install note: some manual wiring required (12V auxiliary and electric brake circuits)
- Warranty: CURT one year limited
Fitment
Universal. Works with any vehicle that has a working 4-way flat trailer connector, including EVs like the Kia Niro EV with the Torklift WH50565 harness.
Professional Installation, At Our Shop or Mobile to You
The 12V and brake circuits need to be wired correctly for your trailer brakes to work. EV Bandit handles the full job in shop at our Los Angeles area facility or mobile at your home or office, including the 12V battery feed, connector mounting and a full light and brake function test.
Get a FREE install quote, response in 2 hours or less, 100% guaranteed. Request a quote or call/text (310) 626-3118.