MECMO 360° Rotatable 7 Pin & 4 Pin Circuit Tester Adapter w/ 6 LED Indicators, Swivel 7 Way Blade to 4 Way Flat Connector Plug Tester for RV Pickup Truck Tow Hitch Towing Vehicle Trailer Wiring Socket — Open-Box, 17% Off

Name: MECMO 360° Rotatable 7 Pin & 4 Pin Circuit Tester Adapter w/ 6 LED Indicators, Swivel 7 Way Blade to 4 Way Flat Connector Plug Tester for RV Pickup Truck Tow Hitch Towing Vehicle Trailer Wiring Socket
Brand: MECMO
SKU: awhd-us-b0c6f3f454
Price: 19.97 USD
Availability: InStock

Brand: MECMO

Condition: Used - VeryGood

$19⁹⁷

$23⁹⁹

-17% Save $4⁰²

Updated: 15 days ago

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Description

Dual Compatibility：MECMO 2-in-1 Trailer Light Tester, tests both 4-Pin Flat and 7-Way RV trailer connectors just with a single device - Universal compatibility with 99% trucks/SUVs (perfect for Ford F150, RAM 2500, Chevy Silverado, etc.)

360° Rotation Indicators Panel: Ergonomic swivel design 7 pin to 4 pin trailer adapter tester adapts to all towing vehicle socket orientations; Precision-engineered safety lock prevents over-rotation (180° max each side)

6 LED Diagnostic Matrix: Real-time circuit analysis through red indicators: brake lights, turn signals, taillights, stop, reverse, electric brakes, and 12V (auxiliary power)

Built to Last: This 4 flat and RV 7 pin trailer wiring tester is made of IP67 Waterproof ABS housing withstands extreme road conditions; Self-cleaning terminals with brass core and tin-plated copper coating

Easy to Use: Check LED status within 2 seconds, just simply insert 7-way blade into RV socket or connect 4-flat plug to trailer harness; No tools required - 7 pin electric trailer brake tester Perfect for roadside diagnostics

RV Trailer Plug Light Circuit Tester Adapter 7 Way Blade & 4 Pin Trailer Wiring Tester Trailer Light Wire Circuit Tester for Boat SUV Truck

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Product Details

SKU:: awhd-us-b0c6f3f454
Model:: ME-TESTER-47
Country:: US
ASIN:: B0C6F3F454

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Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $4 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

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Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.