TAP Plug-In Simple LED Adapter — 7 RV Blade to 4 Flat Nite-Glow, Model# 37335

LED Series vehicle-to-trailer adapter incorporates built-in troubleshooting. If the trailer lights are not functioning correctly, the adapters LED lighting will indicate whether its a trailer- or vehicle-side problem. Plug-In Simple takes the guesswork out of vehicle-to-trailer wiring.