7-Way RV Blade to 7-Pin Round Trailer Adapter – Plug-and-Play, Weatherproof Wiring Connector

Get your trailer lights working in minutes—no rewiring, no guesswork. This heavy-duty adapter bridges a vehicle with a 7-way RV blade socket to a trailer with a 7-pin round plug, powering tail, brake, turn and reverse circuits with a reliable, secure fit.

Why Choose This 7-Way Blade to 7-Pin Round Adapter?

• Instant compatibility: Converts 7-way RV blade (vehicle) to 7-pin round (trailer) in seconds

• No cutting or splicing: True plug-and-play; keeps factory wiring intact

• Weather-ready build: Impact- and corrosion-resistant housing with protective wire loom

• Secure connection: Spring-loaded dust cover and positive-lock fit resist vibration and moisture

• Flexible routing: Short pigtail increases turning radius and eases bumper/tongue placement

• Universal 12V lighting: Powers tail, stop, turn and reverse (when supported by the trailer)

Features

• Rugged plastic/metal construction with sealed protective loom

• Spring-loaded lid on the round socket keeps terminals clean

• Tight-tolerance terminals reduce signal drop and intermittent faults

• Low-profile, OEM-style design looks factory-installed

• Plug-and-play install—no additional modules required

Benefits

• Safer towing: Verify and power lighting before you hit the road

• Save time and money: Avoid rewiring jobs and shop visits

• Cleaner install: Keep factory harnesses untouched for warranty and resale value

Who Is It For?

• Pickup/SUV owners with a 7-way RV blade bumper socket towing a trailer that has a 7-pin round plug

• Farm, construction and utility operators mixing light-duty tow vehicles with commercial or older round-pin trailers

• RV owners needing a quick, clean solution for mixed connector types

Compatibility (Read Before You Buy)

• Vehicle side: 7-way RV blade socket (female) — common on US pickups/SUVs

• Trailer side: 7-pin round plug (male) — common on commercial/tractor/semi/farm trailers

• Voltage: 12V lighting circuits only

Not compatible without additional adapters:

• 4-flat or 5-flat trailer plugs

• 13-pin Euro (ISO 11446)

• If your trailer uses the small Euro 7-pin round (ISO 1724), contact us to confirm round size before purchase

Specifications

• Type: Trailer adapter connector (7-way RV blade → 7-pin round)

• Materials: Plastic + metal, corrosion-resistant contacts

• Color: Black

• Harness: Flexible pigtail for improved turning radius and mounting options

• Environment: Weather-resistant housing and dust cover

• Installation: Plug-and-play (no new wiring in vehicle or trailer)

What’s Included

• 1 × 7-Way RV Blade to 7-Pin Round Trailer Adapter Connector

How to Install (60 seconds)

1. Switch off vehicle lights/signals.

2. Plug the adapter’s blade end into your vehicle’s 7-way RV blade bumper socket.

3. Insert the trailer’s 7-pin round plug into the adapter’s round socket and close the spring lid.

4. Test left/right turn, tail, brake and reverse (if supported).

FAQs

Will this work with my truck’s factory 7-way?
Yes—if your truck has the standard US 7-way RV blade socket.

Will it fit a 4-flat trailer?
No. You would need a separate 7-blade to 4-flat adapter.

12V only?
Yes. Designed for standard 12V trailer lighting circuits.