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OPT7 7-Pin to 4-Pin Trailer Adapter with LED Tester – Built-In
2-in-1 Diagnostic Plug – Test & Tow with Confidence
Built for Trucks, SUVs & Trailers
This heavy-duty adapter converts your vehicle’s 7-way blade socket to a 4-way flat trailer plug while doubling as a full LED circuit tester. No more guesswork or time wasted chasing wiring issues—this is your all-in-one tow tool.
2-in-1 Adapter and Tester Design
- Convert 7-pin to standard 4-pin trailer plug
- Instantly test your wiring setup before you tow
- Work with most pickups, SUVs, and trailers
Check 6 Essential Functions Fast
Built-in LEDs light up for:
- Brake light
- Reverse light
- Turn signal
- Tail light
- Trailer brake
- 12V auxiliary power
Bright, Easy-to-Read LED Indicators
Each light circuit has its own dedicated LED. Just plug in and read the results—no tools, no hassle. Works great even in dim garage or roadside conditions.
Quick, Secure Plug-and-Play Fit
Durable construction with a locking tab for a secure connection at your hitch. No hardwiring or installation required.
Warranty Covered
Buy with confidence—backed by our 30-day warranty from the order date.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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