Weatherproof construction for reliable operation in outdoor conditions. The connector features a unique separated brake light and taillight circuit design to signal interference and ensure reliability on the road. Compact and lightweight design for easy carrying and storage, making it a practical accessory for camping and outdoor adventures seeking a dependable connection solution. 4 pin to 7 pin trailer connector enables seamless compatibility between different trailers and vehicles, delivering flexibility and ease of use. Ideal for trailer and RV owners who need to connect to different models, and for professional transport drivers who require efficient and stable equipment for safe transport. Use scenarios - Camping or outdoor trips: connect various trailers to cars or SUVs for flexible towing setups. - RV and trailer towing at sites: swap between trailers or vehicles with minimal setup effort. - Professional transport: reliable cross-model trailer connections to support safe, efficient hauls.