Curt Manufacturing

4-Way Flat License Plate Light Plug Adapter

SKU: C58404
Lititz, PA
M-F 6:30am-8:30pm; Sat 6:30am-4:00pm
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Lititz Your Store 7 in stock
Features chevron-down chevron-up
The CURT Electrical Adapter provides a quick, simple solution for mismatched trailer and tow vehicle wiring. This adapter allows your vehicle's electrical socket to connect with a different trailer plug type—for example, adapting a 4-way flat vehicle socket to fit into a 1-1/4 license plate light hole for a convenient, ready-to-use attachment point. It features quality plastic construction, requires no splicing, and comes with a protective dust cover. Solve your connection issues instantly and tow with confidence, backed by CURT's one-year limited warranty."
  • Allows a 4-way flat socket to be mounted in a license plate light hole
  • 1-1/4" plug fits a typical license plate light hole
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights, and turn signals
  • Dust cover keeps connector clean when not in use
Specifications chevron-down chevron-up
Brand Curt Manufacturing
Date Added Feb 12, 2026
Store Location (Lititz, PA) Aisle 13, Section M4
Package Length (in) 5.00"
Package Width (in) 2.00"
Package Height (in) 1.80"
Manufacturer Part Number 58404
Electrical Component Location Vehicle / Trailer
Hub Warehouse D25
Part Type 4-Way Connector
Product 4-Way Flat Knockout Plugs
Shipping Weight 0.3 lb
Warranty One-Year Limited Warranty