Trailer-&-Towing-Accessories > Trailer-Wire-Connections > Trailer-Connector-Adapters

CURT Dual-Output Adapter with Backup Alarm (4-Way Flat to 7-Way RV Blade Trailer)

Dual-Output Adapter with Backup Alarm

Dual-Output Adapter with Backup Alarm (4-Way Flat to 7-Way RV Blade Trailer)


  • Adapts a 4-way flat socket to fit 4-way flat and 7-way RV blade trailer plugs
  • Integrated backup alarm sounds when vehicle is in reverse
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 7-way RV blade adds reverse lights, electric brakes and auxiliary power
  • Dust covers included to keep connectors clean when not in use
  • Slit loom keeps wires contained and well protected
  • Metal bracket securely mounts wiring to the vehicle or trailer hitch
  • All CURT items have a 15% restocking fee
Item Description Price Qty in
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CURT57102 CURT 57102, Dual-Output 4-Way Flat Vehicle-Side to 7-Way RV Blade Trailer Wiring Adapter with Backup Alarm (1MIN) 39.30 1 EA

CURT Dual-Output Electrical Adapter (Adds 6-Way Round to 4-Way Flat)

Dual-Output Adapter with Backup Alarm

Dual-Output Electrical Adapter (Adds 6-Way Round to 4-Way Flat)


  • Adapts a 4-way flat socket to fit 4-way flat and 6-way round trailer plugs
  • Simple plug-and-play design for easy installation (some manual wiring required)
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 6-way round connector adds electric brakes and auxiliary power
  • Dust covers included to keep connectors clean when not in use
  • Slit loom keeps wires contained and well protected
  • Metal bracket securely mounts wiring to the vehicle or trailer hitch
  • All CURT items have a 15% restocking fee
Item Description Price Qty in
Package 		Add to Cart
CURT57604 CURT 57604, Dual-Output 4-Way Flat Vehicle-Side to 6-Way Round Trailer Wiring Adapter (1 MIN) 25.16 1 EA

CURT Dual-Output Electrical Adapter (Adds 7-Way RV Blade to 4-Way Flat)

Dual-Output Adapter with Backup Alarm

Dual-Output Electrical Adapter (Adds 7-Way RV Blade to 4-Way Flat)


  • All CURT items have a 15% restocking fee
  • Adapts a 4-way flat socket to fit 4-way flat and 7-way RV blade trailer plugs
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • Dust covers included to keep connectors clean when not in use
  • Slit loom keeps wires contained and well protected
  • Metal bracket securely mounts wiring to the vehicle or trailer hitch
Item Description Price Qty in
Package 		Add to Cart
CURT57672 CURT 57672, Dual-Output 4-Way Flat Vehicle-Side to 7-Way RV Blade Trailer Wiring Adapter (1 MIN) 32.20 1 EA

CURT Dual-Output Electrical Adapter with Tester (Adds 7-Way RV Blade to 4-Way Flat)

Dual-Output Adapter with Backup Alarm

Dual-Output Electrical Adapter with Tester (Adds 7-Way RV Blade to 4-Way Flat)


  • Adapts a 4-way flat socket to fit 4-way flat and 7-way RV blade trailer plugs
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • Integrated LED tester confirms proper function of vehicle-side wiring connector
  • Dust covers included to keep connectors clean when not in use
  • Slit loom keeps wires contained and well protected
  • Metal bracket securely mounts wiring to the vehicle or trailer hitch
  • All CURT items have a 15% restocking fee
Item Description Price Qty in
Package 		Add to Cart
CURT57674 CURT 57674, Dual-Output 4-Way Flat Vehicle-Side to 7-Way RV Blade Trailer Wiring Adapter with Tester (1 MIN) 36.39 1 EA
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