7-Way Round to 4-Pin Flat Trailer Plug Light Adapter – RV, Boat, or Utility Trailer

About This Product

The 7-Way Round to 4-Pin Flat Light Adapter makes it easy to connect a standard 4-pin trailer plug to a tow vehicle equipped with a 7-Round blade socket. No cutting, splicing, or wiring changes are required — simply plug it in to power your trailer’s running lights, turn signals, and brake lights.

Features

• Converts 7-Way Round (RV-style blade) connector on your tow vehicle to a 4-Pin flat trailer plug
• Provides lighting functions: running lights, left/right turn signals, and brake lights
• Compact, weather-resistant housing with secure fit
• Corrosion-resistant metal contacts for long-term reliability
• Perfect for small utility trailers, boat trailers, and campers using a 4-Pin setup
• Plug-and-play design — no wiring or tools required

Compatibility

• Fits standard 7-Way Round blade vehicle connectors (tow vehicle side)
• Accepts standard 4-Pin flat trailer plugs (trailer side)
• Works with most trucks, SUVs, RVs, and tow-package vehicles

Visual Reference

Your Towing Vehicle Plug Looks Like This	Your Trailer Plug Looks Like This

Specifications

• Part Number: 12716
• Vehicle Connector: 7-Way Round (blade style)
• Trailer Connector: 4-Pin Flat
• Material: Durable molded plastic with brass terminals
• Weatherproof Seal: Yes
• Voltage: 12 V DC
• Functions Supported: Running lights, left/right turn, stop/brake lights
• Ground: Integrated through 4-Pin connector
• Installation: Plug-and-Play — no wiring or tools required

Note: This adapter transfers light signals only (running, turn, and brake lights). Auxiliary power, reverse, or electric brake functions from the 7-way connector are not used in 4-Pin trailer systems.