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Black plastic 7-way electrical adapter with flat 4-way plug and blade connector

Curt Manufacturing

Curt Manufacturing 57245 7-Way Electrical Adapter

SKU CH-7N2F-Q89VG

Connects a 4-way flat trailer plug to a 7-way blade vehicle socket with an IP67-rated housing and built-in LED tester for plug-and-play installation

  • Product typeTrailer, Plow & Towing Equipment
  • Connects tail, brake and turn signals via 7-way blade to 4-way flat
  • IP67 rating protects against dust and water ingress
  • LED tester confirms vehicle-side wiring function instantly
  • Plug-and-play design eliminates cutting or splicing wires
  • Compact 1 3/4 in height fits tight mounting spaces

7-Way Electrical Adapter

The CURT 57245 adapter converts a vehicle 7-way blade socket to a 4-way flat trailer plug. It connects tail lights, brake lights and turn signals for standard trailer towing. An integrated LED tester confirms proper function of the vehicle-side wiring connector.

Verify vehicle socket and trailer plug

Ensure the vehicle provides a 7-way blade connection and the trailer uses a 4-way flat plug. The plug-and-play design eliminates cutting or splicing, so no extra tools are required. The IP67 rating protects the internals against dust and water ingress.

Fits between vehicle and trailer harness

The black plastic housing measures 1 3/4 in high, 1 3/4 in wide and 4 in long, sitting inline between the two connectors. It frees the installer from custom wiring work while maintaining signal continuity for lighting circuits. The adapter draws power directly from the vehicle socket.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 75% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameCURT
Product typeTrailer, Plow & Towing Equipment

Questions about this item

Does the adapter come with the 4-way flat plug or do I need to supply my own trailer connector?

The adapter has a built-in 4-way flat trailer socket and a 7-way blade vehicle plug, so no separate connectors are required for a standard trailer hook-up.

Which version should I choose if my tow vehicle has a 7-way blade socket and my trailer uses a 4-way flat plug?

This single model is designed exactly for that combination — 7-way blade on the vehicle side and 4-way flat on the trailer side — so no other version is needed.

What does the IP67 rating mean when the adapter is mounted on a tow vehicle?

IP67 means the housing is dust-tight and can withstand temporary immersion in water, protecting the internal contacts during rain, car washes or shallow water crossings.

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