Hopkins Manufacturing 7 RV ROUND TO 4 FLAT W/NIGHT GLOW LEDS NEW ADAPTE

This adapter converts a 7 blade vehicle connector to a 4 flat trailer side connector.á Its Nite-Glow function checks to see if you are getting power from the tow vehicle, and confirms you have installed the adapter properly. If the connector glows red, you have a solid connection. Also, includes dust cover for 4 Flat to help prevent corrosion.