12V 7 Way Connector Tester for European standard trailer systems Key benefits - Quick and clear fault diagnosis for trailer and vehicle wiring - Durable and reliable for long lasting use - Easy to use and store with a compact design - Helps prevent incorrect wiring by clearly indicating where a problem lies What it is - The Trailer Tester Plug is a 12V 7 Way connector tester designed for European standard trailer wiring - Made with high quality ABS plastic and copper contacts, featuring a frosted surface for durability and grip - 7 pin trailer tester plug and 12V 7 way flat pin connector tester - Not suitable for American cars; please confirm your car model before purchasing Compatibility and scope - Compatible with 12V trailer and towing systems that use a 7 pin plug and 7 pin socket - Widely suitable for Caravan, RV, recreational vehicles, trucks, trailers and related 7 pin wiring - Designed for 7 pin wide applications including 7 pin cable plug socket and 7 pin RV blade trailer wiring towing vehicle socket How it works - One side connects to the 7 pin plug of a trailer and the other side connects to the 7 pin socket of the car - Provides quick indication of whether a wiring issue lies with the vehicle or the trailer - Helps identify problems with both 7 pin plug and 7 pin socket connections Construction and design - Safe and dependable performance with a reasonable, user friendly design - Deft appearance and convenient usage - Durable construction and delicate workmanship intended to replace older tools Use scenarios - Preparing for a caravan or RV trip: test trailer lighting and wiring before departure to ensure brake, turn, and tail lights function correctly - Routine maintenance for caravans, trailers or tow vehicles: quickly verify wiring integrity after repairs or component replacements - Truck towing with trailers: diagnose whether lighting or wiring faults are in the vehicle or the trailer to speed up repairs Notes - Please confirm your car model before purchasing to ensure compatibility with European standard 7 pin systems - Suitable for 12V caravan, RV, recreational vehicles, trucks and trailers, and related 7 pin wiring setups