7pin 13pin Trailer Socket Tester 12V Wiring For Car Taillights

Meet the 7pin 13pin Trailer Socket Tester, a compact 12V diagnostic tool built for trailers, caravans, RVs, and more. Plug into your 7-pin or 13-pin socket on the trailer or towing vehicle, press the yellow button, and quickly verify wiring health to prevent miswired taillights, brake lights, or indicators on the road.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Main Description

Designed for durability and everyday use, this tester features a rugged plastic body that withstands temperature variations and resistances to acids and alkalis. Its compact handheld design fits neatly in a glovebox or toolkit, making it ideal for on-the-spot checks before trips. Whether you’re working with European, American, or Australian trailer plugs, sockets, or cables, this tester helps you identify wiring faults in both towing vehicles and trailers/caravans quickly and reliably. To test, simply insert into a 7-pin or 13-pin socket and press the yellow button to reveal the status of your wiring. The unit is powered by a 9V battery (not included) and supports 12V electrical systems common to car taillights and trailer lighting.

Perfect for a wide range of setups—trailers, RVs, carts, trucks, semi-trailers, sedans, yachts, ships, motorcycles, and more—the tester provides a practical, portable solution for ensuring safe, compliant lighting before any journey.

Benefits & Tips

• Quickly diagnose trailer wiring for 7-pin and 13-pin systems to prevent roadside light failures.
• Use as a portable tester for European/American/Australian trailer plugs and sockets when buying or renting trailers.
• Great for DIY wiring checks, maintenance before trips, and routine service by vehicle and trailer owners or technicians.

Product specifications

• Model Name: 29702
• Voltage: 12V
• Power Source: 9V Battery (not included)
• Material: Plastic
• Origin: Mainland China
• Brand Name: NONE
• Item Type: Electrical Testers & Test Leads

Package includes:

• 1 x Plug Socket Diagnostic Tools

Warnings/Reminders

• Powered by a 9V battery (not included).

Since 2002, intercyprus.com has stood for reliable service and quality you can count on.