TESTER TOW HOOK TRAILER PLUG SOCKETS 2 ADAPTERS Wireless tester sockets allow you to easily diagnose problems related to improper, defective functioning of trailer lighting. Tester analyzes 6 diagnostic positions of sockets Housing made of durable plastic with reduced flammability. Professional diagnostics If any indicator light does not light up, it means that the cable is damaged. Stop light - red Left turn signal - yellow Rear fog light or 12V - blue Left tail light - black Grounding - white color Right direction indicator - green Right tail light - brown HOW TO PERFORM TEST SOCKETS connect tester do car socket - the lights glow red turn on the light (e.g. stop) the light turns green when the light from the light on turns red, it means that the installation is malfunctioning HOW TO PERFORM TEST TRAILERS connect the do tester press the yellow button on the tester green light means efficient installation red light means damaged installation or burnt bulb Included: Tester sockets 13/7 Adapter 7/13 Adapter PRODUCT CODE:006064